87850979 has 4 divisors (see below), whose sum is σ = 87901560. Its totient is φ = 87800400.

The previous prime is 87850967. The next prime is 87850981. The reversal of 87850979 is 97905878.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87850979 - 2⁴ = 87850963 is a prime.

It is a super-2 number, since 2×87850979² = 15435589022516882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87850979.

It is not an unprimeable number, because it can be changed into a prime (87850909) 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, 22589 + ... + 26190.

It is an arithmetic number, because the mean of its divisors is an integer number (21975390).

Almost surely, 2^87850979 is an apocalyptic number.

87850979 is a deficient number, since it is larger than the sum of its proper divisors (50581).

87850979 is a wasteful number, since it uses less digits than its factorization.

87850979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50580.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The square root of 87850979 is about 9372.8853081642. The cubic root of 87850979 is about 444.5448006965.

The spelling of 87850979 in words is "eighty-seven million, eight hundred fifty thousand, nine hundred seventy-nine".