987498957 has 16 divisors (see below), whose sum is σ = 1354362560. Its totient is φ = 639539712.

The previous prime is 987498949. The next prime is 987498961. The reversal of 987498957 is 759894789.

It is not a de Polignac number, because 987498957 - 2³ = 987498949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987498937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68094 + ... + 81312.

It is an arithmetic number, because the mean of its divisors is an integer number (84647660).

Almost surely, 2^987498957 is an apocalyptic number.

It is an amenable number.

987498957 is a deficient number, since it is larger than the sum of its proper divisors (366863603).

987498957 is a wasteful number, since it uses less digits than its factorization.

987498957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13932.

The product of its digits is 45722880, while the sum is 66.

The square root of 987498957 is about 31424.4961296120. The cubic root of 987498957 is about 995.8155000504.

The spelling of 987498957 in words is "nine hundred eighty-seven million, four hundred ninety-eight thousand, nine hundred fifty-seven".