87494399 has 4 divisors (see below), whose sum is σ = 87583680. Its totient is φ = 87405120.

The previous prime is 87494389. The next prime is 87494417. The reversal of 87494399 is 99349478.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87494399 - 2²⁰ = 86445823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87494399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87494389) 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, 43154 + ... + 45135.

It is an arithmetic number, because the mean of its divisors is an integer number (21895920).

Almost surely, 2^87494399 is an apocalyptic number.

87494399 is a deficient number, since it is larger than the sum of its proper divisors (89281).

87494399 is an equidigital number, since it uses as much as digits as its factorization.

87494399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89280.

The product of its digits is 1959552, while the sum is 53.

The square root of 87494399 is about 9353.8440761005. The cubic root of 87494399 is about 443.9425280019.

The spelling of 87494399 in words is "eighty-seven million, four hundred ninety-four thousand, three hundred ninety-nine".