89949639 has 16 divisors (see below), whose sum is σ = 131598432. Its totient is φ = 54307968.

The previous prime is 89949599. The next prime is 89949641. The reversal of 89949639 is 93694998.

It is not a de Polignac number, because 89949639 - 2⁹ = 89949127 is a prime.

It is a super-3 number, since 3×89949639³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89949649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19692 + ... + 23825.

It is an arithmetic number, because the mean of its divisors is an integer number (8224902).

Almost surely, 2^89949639 is an apocalyptic number.

89949639 is a deficient number, since it is larger than the sum of its proper divisors (41648793).

89949639 is a wasteful number, since it uses less digits than its factorization.

89949639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43586.

The product of its digits is 3779136, while the sum is 57.

The square root of 89949639 is about 9484.1783513386. The cubic root of 89949639 is about 448.0568709026.

The spelling of 89949639 in words is "eighty-nine million, nine hundred forty-nine thousand, six hundred thirty-nine".