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4079290981 = 17268989237
BaseRepresentation
bin1111001100100101…
…0000101001100101
3101112021220110020011
43303021100221211
531323244302411
61512441210221
7203042254423
oct36311205145
911467813204
104079290981
111803720767
1295a190971
1350019415c
142a9ab4113
1518d1d8c21
hexf3250a65

4079290981 has 8 divisors (see below), whose sum is σ = 4320903960. Its totient is φ = 3837861888.

The previous prime is 4079290967. The next prime is 4079290987. The reversal of 4079290981 is 1890929704.

It can be written as a sum of positive squares in 4 ways, for example, as 205348900 + 3873942081 = 14330^2 + 62241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4079290981 - 25 = 4079290949 is a prime.

It is a super-2 number, since 2×40792909812 = 33281229815335884722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4079290987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095 + ... + 90331.

It is an arithmetic number, because the mean of its divisors is an integer number (540112995).

Almost surely, 24079290981 is an apocalyptic number.

It is an amenable number.

4079290981 is a deficient number, since it is larger than the sum of its proper divisors (241612979).

4079290981 is a wasteful number, since it uses less digits than its factorization.

4079290981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91943.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 4079290981 is about 63869.3273880350. The cubic root of 4079290981 is about 1597.8213813438.

The spelling of 4079290981 in words is "four billion, seventy-nine million, two hundred ninety thousand, nine hundred eighty-one".

Divisors: 1 17 2689 45713 89237 1517029 239958293 4079290981