87639416 has 16 divisors (see below), whose sum is σ = 165429000. Its totient is φ = 43525024.

The previous prime is 87639413. The next prime is 87639467. The reversal of 87639416 is 61493678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87639413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35570 + ... + 37953.

Almost surely, 2^87639416 is an apocalyptic number.

It is an amenable number.

87639416 is a deficient number, since it is larger than the sum of its proper divisors (77789584).

87639416 is a wasteful number, since it uses less digits than its factorization.

87639416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73678 (or 73674 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 87639416 is about 9361.5925995527. The cubic root of 87639416 is about 444.1876624667.

The spelling of 87639416 in words is "eighty-seven million, six hundred thirty-nine thousand, four hundred sixteen".