87313479 has 24 divisors (see below), whose sum is σ = 135500400. Its totient is φ = 49800960.

The previous prime is 87313441. The next prime is 87313481. The reversal of 87313479 is 97431378.

It is not a de Polignac number, because 87313479 - 2¹⁹ = 86789191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87313479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87313489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 904 + ... + 13245.

It is an arithmetic number, because the mean of its divisors is an integer number (5645850).

Almost surely, 2^87313479 is an apocalyptic number.

87313479 is a deficient number, since it is larger than the sum of its proper divisors (48186921).

87313479 is a wasteful number, since it uses less digits than its factorization.

87313479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14191 (or 14180 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 87313479 is about 9344.1681812776. The cubic root of 87313479 is about 443.6363236160.

The spelling of 87313479 in words is "eighty-seven million, three hundred thirteen thousand, four hundred seventy-nine".