977456943 has 16 divisors (see below), whose sum is σ = 1448604000. Its totient is φ = 651404160.

The previous prime is 977456927. The next prime is 977456983. The reversal of 977456943 is 349654779.

It is a happy number.

977456943 is a `hidden beast` number, since 9 + 7 + 74 + 569 + 4 + 3 = 666.

It is not a de Polignac number, because 977456943 - 2⁴ = 977456927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 977456943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977456923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104853 + ... + 113793.

It is an arithmetic number, because the mean of its divisors is an integer number (90537750).

Almost surely, 2^977456943 is an apocalyptic number.

977456943 is a deficient number, since it is larger than the sum of its proper divisors (471147057).

977456943 is a wasteful number, since it uses less digits than its factorization.

977456943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12999 (or 12993 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 977456943 is about 31264.3078125840. The cubic root of 977456943 is about 992.4284641997.

The spelling of 977456943 in words is "nine hundred seventy-seven million, four hundred fifty-six thousand, nine hundred forty-three".