89948639 has 24 divisors (see below), whose sum is σ = 103716864. Its totient is φ = 77338800.

The previous prime is 89948609. The next prime is 89948657. The reversal of 89948639 is 93684998.

It is a de Polignac number, because none of the positive numbers 2^k-89948639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89948609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 708194 + ... + 708320.

It is an arithmetic number, because the mean of its divisors is an integer number (4321536).

Almost surely, 2^89948639 is an apocalyptic number.

89948639 is a deficient number, since it is larger than the sum of its proper divisors (13768225).

89948639 is a wasteful number, since it uses less digits than its factorization.

89948639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 236 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 56.

The square root of 89948639 is about 9484.1256318123. The cubic root of 89948639 is about 448.0552104975.

The spelling of 89948639 in words is "eighty-nine million, nine hundred forty-eight thousand, six hundred thirty-nine".