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4990472881 = 89281919891
BaseRepresentation
bin1001010010111010…
…01001001010110001
3110212210110021210221
410221131021022301
540210030113011
62143111053041
7234445214422
oct45135111261
913783407727
104990472881
112130aa0159
12b73371181
13616ba4344
14354b01649
151e31c3971
hex1297492b1

4990472881 has 8 divisors (see below), whose sum is σ = 5048589600. Its totient is φ = 4932401760.

The previous prime is 4990472867. The next prime is 4990472899. The reversal of 4990472881 is 1882740994.

It is a happy number.

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 4990472881 - 25 = 4990472849 is a prime.

It is a super-2 number, since 2×49904728812 = 49809639151992880322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4990472821) 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, 240946 + ... + 260836.

It is an arithmetic number, because the mean of its divisors is an integer number (631073700).

Almost surely, 24990472881 is an apocalyptic number.

It is an amenable number.

4990472881 is a deficient number, since it is larger than the sum of its proper divisors (58116719).

4990472881 is a wasteful number, since it uses less digits than its factorization.

4990472881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22799.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 4990472881 is about 70643.2790929187. The cubic root of 4990472881 is about 1708.8891798449.

The spelling of 4990472881 in words is "four billion, nine hundred ninety million, four hundred seventy-two thousand, eight hundred eighty-one".

Divisors: 1 89 2819 19891 250891 1770299 56072729 4990472881