87389994 has 8 divisors (see below), whose sum is σ = 174780000. Its totient is φ = 29129996.

The previous prime is 87389993. The next prime is 87389999. The reversal of 87389994 is 49998378.

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

87389994 is an admirable number.

It is a super-2 number, since 2×87389994² = 15274022102640072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87389993) 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, 7282494 + ... + 7282505.

It is an arithmetic number, because the mean of its divisors is an integer number (21847500).

Almost surely, 2^87389994 is an apocalyptic number.

87389994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87389994 is a wasteful number, since it uses less digits than its factorization.

87389994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14565004.

The product of its digits is 3919104, while the sum is 57.

The square root of 87389994 is about 9348.2615496145. The cubic root of 87389994 is about 443.7658756735.

The spelling of 87389994 in words is "eighty-seven million, three hundred eighty-nine thousand, nine hundred ninety-four".