977334921 has 6 divisors (see below), whose sum is σ = 1411706010. Its totient is φ = 651556608.

The previous prime is 977334857. The next prime is 977334931. The reversal of 977334921 is 129433779.

977334921 is a `hidden beast` number, since 97 + 73 + 3 + 492 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 725763600 + 251571321 = 26940^2 + 15861^2 .

It is not a de Polignac number, because 977334921 - 2⁶ = 977334857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (977334931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54296376 + ... + 54296393.

It is an arithmetic number, because the mean of its divisors is an integer number (235284335).

Almost surely, 2^977334921 is an apocalyptic number.

It is an amenable number.

977334921 is a deficient number, since it is larger than the sum of its proper divisors (434371089).

977334921 is a wasteful number, since it uses less digits than its factorization.

977334921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108592775 (or 108592772 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 977334921 is about 31262.3562931523. The cubic root of 977334921 is about 992.3871654852.

The spelling of 977334921 in words is "nine hundred seventy-seven million, three hundred thirty-four thousand, nine hundred twenty-one".