87439715 has 8 divisors (see below), whose sum is σ = 114466608. Its totient is φ = 63592480.

The previous prime is 87439699. The next prime is 87439717. The reversal of 87439715 is 51793478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87439715 - 2⁴ = 87439699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87439717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794852 + ... + 794961.

It is an arithmetic number, because the mean of its divisors is an integer number (14308326).

Almost surely, 2^87439715 is an apocalyptic number.

87439715 is a deficient number, since it is larger than the sum of its proper divisors (27026893).

87439715 is a wasteful number, since it uses less digits than its factorization.

87439715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589829.

The product of its digits is 211680, while the sum is 44.

The square root of 87439715 is about 9350.9205429198. The cubic root of 87439715 is about 443.8500206992.

The spelling of 87439715 in words is "eighty-seven million, four hundred thirty-nine thousand, seven hundred fifteen".