920497979 has 8 divisors (see below), whose sum is σ = 925712832. Its totient is φ = 915298560.

The previous prime is 920497933. The next prime is 920498003. The reversal of 920497979 is 979794029.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920497979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920490979) 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, 128174 + ... + 135164.

It is an arithmetic number, because the mean of its divisors is an integer number (115714104).

Almost surely, 2^920497979 is an apocalyptic number.

920497979 is a deficient number, since it is larger than the sum of its proper divisors (5214853).

920497979 is a wasteful number, since it uses less digits than its factorization.

920497979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717.

The product of its (nonzero) digits is 2571912, while the sum is 56.

The square root of 920497979 is about 30339.7096063888. The cubic root of 920497979 is about 972.7642760200.

The spelling of 920497979 in words is "nine hundred twenty million, four hundred ninety-seven thousand, nine hundred seventy-nine".