977770396 has 24 divisors (see below), whose sum is σ = 1746758160. Its totient is φ = 478781952.

The previous prime is 977770393. The next prime is 977770429. The reversal of 977770396 is 693077779.

977770396 = 48² + 49² + ... + 1431².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977770393) 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 7 ways as a sum of consecutive naturals, for example, 35820 + ... + 56908.

It is an arithmetic number, because the mean of its divisors is an integer number (72781590).

Almost surely, 2^977770396 is an apocalyptic number.

It is an amenable number.

977770396 is a deficient number, since it is larger than the sum of its proper divisors (768987764).

977770396 is a wasteful number, since it uses less digits than its factorization.

977770396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21333 (or 21331 counting only the distinct ones).

The product of its (nonzero) digits is 3500658, while the sum is 55.

The square root of 977770396 is about 31269.3203635768. The cubic root of 977770396 is about 992.5345375618.

The spelling of 977770396 in words is "nine hundred seventy-seven million, seven hundred seventy thousand, three hundred ninety-six".