977083491 has 4 divisors (see below), whose sum is σ = 1302777992. Its totient is φ = 651388992.

The previous prime is 977083489. The next prime is 977083501. The reversal of 977083491 is 194380779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194380779 = 3 ⋅64793593.

It is not a de Polignac number, because 977083491 - 2¹ = 977083489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 977083491.

It is not an unprimeable number, because it can be changed into a prime (977083411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162847246 + ... + 162847251.

It is an arithmetic number, because the mean of its divisors is an integer number (325694498).

Almost surely, 2^977083491 is an apocalyptic number.

977083491 is a deficient number, since it is larger than the sum of its proper divisors (325694501).

977083491 is a wasteful number, since it uses less digits than its factorization.

977083491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325694500.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 977083491 is about 31258.3347445125. The cubic root of 977083491 is about 992.3020574021.

The spelling of 977083491 in words is "nine hundred seventy-seven million, eighty-three thousand, four hundred ninety-one".