87992403 has 8 divisors (see below), whose sum is σ = 117505488. Its totient is φ = 58570464.

The previous prime is 87992393. The next prime is 87992407. The reversal of 87992403 is 30429978.

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

It is not a de Polignac number, because 87992403 - 2⁶ = 87992339 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (87992407) 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, 20500 + ... + 24417.

It is an arithmetic number, because the mean of its divisors is an integer number (14688186).

Almost surely, 2^87992403 is an apocalyptic number.

87992403 is a deficient number, since it is larger than the sum of its proper divisors (29513085).

87992403 is a wasteful number, since it uses less digits than its factorization.

87992403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45573.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 87992403 is about 9380.4265894468. The cubic root of 87992403 is about 444.7832180662.

The spelling of 87992403 in words is "eighty-seven million, nine hundred ninety-two thousand, four hundred three".