87406279 has 4 divisors (see below), whose sum is σ = 91206576. Its totient is φ = 83605984.

The previous prime is 87406271. The next prime is 87406283. The reversal of 87406279 is 97260478.

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 87406279 - 2³ = 87406271 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 (87406271) 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, 1900114 + ... + 1900159.

It is an arithmetic number, because the mean of its divisors is an integer number (22801644).

Almost surely, 2^87406279 is an apocalyptic number.

87406279 is a deficient number, since it is larger than the sum of its proper divisors (3800297).

87406279 is a wasteful number, since it uses less digits than its factorization.

87406279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800296.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 87406279 is about 9349.1325266037. The cubic root of 87406279 is about 443.7934390062.

The spelling of 87406279 in words is "eighty-seven million, four hundred six thousand, two hundred seventy-nine".