87039379 has 4 divisors (see below), whose sum is σ = 99473584. Its totient is φ = 74605176.

The previous prime is 87039377. The next prime is 87039389. The reversal of 87039379 is 97393078.

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 87039379 - 2¹ = 87039377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87039373) 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, 6217092 + ... + 6217105.

It is an arithmetic number, because the mean of its divisors is an integer number (24868396).

Almost surely, 2^87039379 is an apocalyptic number.

87039379 is a deficient number, since it is larger than the sum of its proper divisors (12434205).

87039379 is a wasteful number, since it uses less digits than its factorization.

87039379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12434204.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 87039379 is about 9329.4897502489. The cubic root of 87039379 is about 443.1716065771.

The spelling of 87039379 in words is "eighty-seven million, thirty-nine thousand, three hundred seventy-nine".