998977952 has 96 divisors (see below), whose sum is σ = 2379331584. Its totient is φ = 403603200.

The previous prime is 998977943. The next prime is 998977961. The reversal of 998977952 is 259779899.

It is an interprime number because it is at equal distance from previous prime (998977943) and next prime (998977961).

It is a super-2 number, since 2×998977952² = 1995913897164228608, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 998977952 parts by 44698 straight cuts.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364427 + ... + 367157.

It is an arithmetic number, because the mean of its divisors is an integer number (24784704).

Almost surely, 2^998977952 is an apocalyptic number.

998977952 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998977952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1189665792).

998977952 is an abundant number, since it is smaller than the sum of its proper divisors (1380353632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998977952 is a wasteful number, since it uses less digits than its factorization.

998977952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842 (or 2834 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 65.

The square root of 998977952 is about 31606.6124727089. The cubic root of 998977952 is about 999.6592012027.

The spelling of 998977952 in words is "nine hundred ninety-eight million, nine hundred seventy-seven thousand, nine hundred fifty-two".