87799942 has 16 divisors (see below), whose sum is σ = 135272592. Its totient is φ = 42714880.

The previous prime is 87799939. The next prime is 87799963. The reversal of 87799942 is 24999778.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35118 + ... + 37534.

It is an arithmetic number, because the mean of its divisors is an integer number (8454537).

Almost surely, 2^87799942 is an apocalyptic number.

87799942 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

87799942 is a deficient number, since it is larger than the sum of its proper divisors (47472650).

87799942 is a wasteful number, since it uses less digits than its factorization.

87799942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903.

The product of its digits is 2286144, while the sum is 55.

The square root of 87799942 is about 9370.1623251681. The cubic root of 87799942 is about 444.4586979642.

It can be divided in two parts, 8779 and 9942, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 87799942 in words is "eighty-seven million, seven hundred ninety-nine thousand, nine hundred forty-two".