8739920957 has 8 divisors (see below), whose sum is σ = 8950037976. Its totient is φ = 8531478592.

The previous prime is 8739920953. The next prime is 8739920993. The reversal of 8739920957 is 7590299378.

It can be written as a sum of positive squares in 4 ways, for example, as 7449243481 + 1290677476 = 86309^2 + 35926^2 .

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 8739920957 - 2² = 8739920953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8739920896 and 8739920905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8739920953) 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, 408098 + ... + 428979.

It is an arithmetic number, because the mean of its divisors is an integer number (1118754747).

Almost surely, 2^8739920957 is an apocalyptic number.

It is an amenable number.

8739920957 is a deficient number, since it is larger than the sum of its proper divisors (210117019).

8739920957 is a wasteful number, since it uses less digits than its factorization.

8739920957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837327.

The product of its (nonzero) digits is 8573040, while the sum is 59.

The square root of 8739920957 is about 93487.5443949620. The cubic root of 8739920957 is about 2059.8511342609.

The spelling of 8739920957 in words is "eight billion, seven hundred thirty-nine million, nine hundred twenty thousand, nine hundred fifty-seven".