87231739 has 16 divisors (see below), whose sum is σ = 103446720. Its totient is φ = 71971200.

The previous prime is 87231733. The next prime is 87231761. The reversal of 87231739 is 93713278.

It is not a de Polignac number, because 87231739 - 2⁵ = 87231707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87231733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124089 + ... + 124789.

It is an arithmetic number, because the mean of its divisors is an integer number (6465420).

Almost surely, 2^87231739 is an apocalyptic number.

87231739 is a deficient number, since it is larger than the sum of its proper divisors (16214981).

87231739 is a wasteful number, since it uses less digits than its factorization.

87231739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350.

The product of its digits is 63504, while the sum is 40.

The square root of 87231739 is about 9339.7933060641. The cubic root of 87231739 is about 443.4978411602.

It can be divided in two parts, 872317 and 39, that added together give a square (872356 = 934²).

The spelling of 87231739 in words is "eighty-seven million, two hundred thirty-one thousand, seven hundred thirty-nine".