9780977 has 4 divisors (see below), whose sum is σ = 9872496. Its totient is φ = 9689460.

The previous prime is 9780973. The next prime is 9780989. The reversal of 9780977 is 7790879.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9780977 - 2² = 9780973 is a prime.

It is a super-2 number, since 2×9780977² = 191335022149058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9780971) 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, 45599 + ... + 45812.

It is an arithmetic number, because the mean of its divisors is an integer number (2468124).

Almost surely, 2^9780977 is an apocalyptic number.

It is an amenable number.

9780977 is a deficient number, since it is larger than the sum of its proper divisors (91519).

9780977 is a wasteful number, since it uses less digits than its factorization.

9780977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91518.

The product of its (nonzero) digits is 222264, while the sum is 47.

The square root of 9780977 is about 3127.4553553968. The cubic root of 9780977 is about 213.8589413091.

The spelling of 9780977 in words is "nine million, seven hundred eighty thousand, nine hundred seventy-seven".