920241187979 has 4 divisors (see below), whose sum is σ = 974373022584. Its totient is φ = 866109353376.

The previous prime is 920241187969. The next prime is 920241187993. The reversal of 920241187979 is 979781142029.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920241187979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (920241187919) 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, 27065917277 + ... + 27065917310.

It is an arithmetic number, because the mean of its divisors is an integer number (243593255646).

Almost surely, 2^920241187979 is an apocalyptic number.

920241187979 is a deficient number, since it is larger than the sum of its proper divisors (54131834605).

920241187979 is a wasteful number, since it uses less digits than its factorization.

920241187979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54131834604.

The product of its (nonzero) digits is 4572288, while the sum is 59.

The spelling of 920241187979 in words is "nine hundred twenty billion, two hundred forty-one million, one hundred eighty-seven thousand, nine hundred seventy-nine".