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7990082437 = 55571437841
BaseRepresentation
bin1110111000011111…
…01111101110000101
3202121211202020120011
413130033233232011
5112330430114222
63400503110221
7402000402661
oct73417575605
922554666504
107990082437
113430214217
12166ba42371
139a447cc3c
1455b2458a1
1531b6dbc77
hex1dc3efb85

7990082437 has 4 divisors (see below), whose sum is σ = 7991525836. Its totient is φ = 7988639040.

The previous prime is 7990082413. The next prime is 7990082449. The reversal of 7990082437 is 7342800997.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5659703361 + 2330379076 = 75231^2 + 48274^2 .

It is a cyclic number.

It is not a de Polignac number, because 7990082437 - 219 = 7989558149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7990082497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713364 + ... + 724477.

It is an arithmetic number, because the mean of its divisors is an integer number (1997881459).

Almost surely, 27990082437 is an apocalyptic number.

It is an amenable number.

7990082437 is a deficient number, since it is larger than the sum of its proper divisors (1443399).

7990082437 is a wasteful number, since it uses less digits than its factorization.

7990082437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443398.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 7990082437 is about 89387.2610442898. The cubic root of 7990082437 is about 1999.1731946602.

The spelling of 7990082437 in words is "seven billion, nine hundred ninety million, eighty-two thousand, four hundred thirty-seven".

Divisors: 1 5557 1437841 7990082437