87293473 has 4 divisors (see below), whose sum is σ = 88489348. Its totient is φ = 86097600.

The previous prime is 87293449. The next prime is 87293477. The reversal of 87293473 is 37439278.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64368529 + 22924944 = 8023^2 + 4788^2 .

It is a cyclic number.

It is not a de Polignac number, because 87293473 - 2²⁵ = 53739041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87293477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597828 + ... + 597973.

It is an arithmetic number, because the mean of its divisors is an integer number (22122337).

Almost surely, 2^87293473 is an apocalyptic number.

It is an amenable number.

87293473 is a deficient number, since it is larger than the sum of its proper divisors (1195875).

87293473 is a wasteful number, since it uses less digits than its factorization.

87293473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195874.

The product of its digits is 254016, while the sum is 43.

The square root of 87293473 is about 9343.0976126764. The cubic root of 87293473 is about 443.6024377970.

The spelling of 87293473 in words is "eighty-seven million, two hundred ninety-three thousand, four hundred seventy-three".