977994045 has 48 divisors (see below), whose sum is σ = 1999875072. Its totient is φ = 432656640.

The previous prime is 977993981. The next prime is 977994047. The reversal of 977994045 is 540499779.

It is not a de Polignac number, because 977994045 - 2⁶ = 977993981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 977993982 and 977994000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977994047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40312 + ... + 59841.

It is an arithmetic number, because the mean of its divisors is an integer number (41664064).

Almost surely, 2^977994045 is an apocalyptic number.

It is an amenable number.

977994045 is an abundant number, since it is smaller than the sum of its proper divisors (1021881027).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

977994045 is a wasteful number, since it uses less digits than its factorization.

977994045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100202 (or 100199 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 977994045 is about 31272.8963321276. The cubic root of 977994045 is about 992.6102071447.

The spelling of 977994045 in words is "nine hundred seventy-seven million, nine hundred ninety-four thousand, forty-five".