984890977 has 4 divisors (see below), whose sum is σ = 1125589696. Its totient is φ = 844192260.

The previous prime is 984890957. The next prime is 984890993. The reversal of 984890977 is 779098489.

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 984890977 - 2¹⁵ = 984858209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (984890957) 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, 70349349 + ... + 70349362.

It is an arithmetic number, because the mean of its divisors is an integer number (281397424).

Almost surely, 2^984890977 is an apocalyptic number.

It is an amenable number.

984890977 is a deficient number, since it is larger than the sum of its proper divisors (140698719).

984890977 is a wasteful number, since it uses less digits than its factorization.

984890977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140698718.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 984890977 is about 31382.9727240744. The cubic root of 984890977 is about 994.9380791917.

The spelling of 984890977 in words is "nine hundred eighty-four million, eight hundred ninety thousand, nine hundred seventy-seven".