87039247 has 8 divisors (see below), whose sum is σ = 92018160. Its totient is φ = 82100160.

The previous prime is 87039221. The next prime is 87039263. The reversal of 87039247 is 74293078.

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

It is a cyclic number.

It is not a de Polignac number, because 87039247 - 2¹¹ = 87037199 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 (87039647) 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, 5404 + ... + 14257.

It is an arithmetic number, because the mean of its divisors is an integer number (11502270).

Almost surely, 2^87039247 is an apocalyptic number.

87039247 is a deficient number, since it is larger than the sum of its proper divisors (4978913).

87039247 is a wasteful number, since it uses less digits than its factorization.

87039247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19913.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 87039247 is about 9329.4826759044. The cubic root of 87039247 is about 443.1713825457.

The spelling of 87039247 in words is "eighty-seven million, thirty-nine thousand, two hundred forty-seven".