88639443 has 6 divisors (see below), whose sum is σ = 128034764. Its totient is φ = 59092956.

The previous prime is 88639423. The next prime is 88639477. The reversal of 88639443 is 34493688.

88639443 is a `hidden beast` number, since 8 + 8 + 639 + 4 + 4 + 3 = 666.

It is not a de Polignac number, because 88639443 - 2⁶ = 88639379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88639423) 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 5 ways as a sum of consecutive naturals, for example, 4924405 + ... + 4924422.

Almost surely, 2^88639443 is an apocalyptic number.

88639443 is a deficient number, since it is larger than the sum of its proper divisors (39395321).

88639443 is a wasteful number, since it uses less digits than its factorization.

88639443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9848833 (or 9848830 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 88639443 is about 9414.8522558774. The cubic root of 88639443 is about 445.8707740259.

The spelling of 88639443 in words is "eighty-eight million, six hundred thirty-nine thousand, four hundred forty-three".