977338731 has 8 divisors (see below), whose sum is σ = 1313066304. Its totient is φ = 646585160.

The previous prime is 977338699. The next prime is 977338741. The reversal of 977338731 is 137833779.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 977338731 - 2⁵ = 977338699 is a prime.

It is a super-2 number, since 2×977338731² = 1910381990225380722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (977338741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243041 + ... + 1243826.

It is an arithmetic number, because the mean of its divisors is an integer number (164133288).

Almost surely, 2^977338731 is an apocalyptic number.

977338731 is a deficient number, since it is larger than the sum of its proper divisors (335727573).

977338731 is a wasteful number, since it uses less digits than its factorization.

977338731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487001.

The product of its digits is 666792, while the sum is 48.

The square root of 977338731 is about 31262.4172289988. The cubic root of 977338731 is about 992.3884550432.

The spelling of 977338731 in words is "nine hundred seventy-seven million, three hundred thirty-eight thousand, seven hundred thirty-one".