987879513 has 4 divisors (see below), whose sum is σ = 1317172688. Its totient is φ = 658586340.

The previous prime is 987879499. The next prime is 987879523. The reversal of 987879513 is 315978789.

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 not a de Polignac number, because 987879513 - 2⁵ = 987879481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987879523) 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, 164646583 + ... + 164646588.

It is an arithmetic number, because the mean of its divisors is an integer number (329293172).

Almost surely, 2^987879513 is an apocalyptic number.

It is an amenable number.

987879513 is a deficient number, since it is larger than the sum of its proper divisors (329293175).

987879513 is a wasteful number, since it uses less digits than its factorization.

987879513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329293174.

The product of its digits is 3810240, while the sum is 57.

The square root of 987879513 is about 31430.5506315114. The cubic root of 987879513 is about 995.9434039469.

The spelling of 987879513 in words is "nine hundred eighty-seven million, eight hundred seventy-nine thousand, five hundred thirteen".