87392173 has 8 divisors (see below), whose sum is σ = 95456160. Its totient is φ = 79348080.

The previous prime is 87392147. The next prime is 87392183. The reversal of 87392173 is 37129378.

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 87392173 - 2¹⁷ = 87261101 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 (87392183) 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, 5118 + ... + 14176.

It is an arithmetic number, because the mean of its divisors is an integer number (11932020).

Almost surely, 2^87392173 is an apocalyptic number.

It is an amenable number.

87392173 is a deficient number, since it is larger than the sum of its proper divisors (8063987).

87392173 is a wasteful number, since it uses less digits than its factorization.

87392173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9947.

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

The square root of 87392173 is about 9348.3780946215. The cubic root of 87392173 is about 443.7695639593.

The spelling of 87392173 in words is "eighty-seven million, three hundred ninety-two thousand, one hundred seventy-three".