89139949 has 8 divisors (see below), whose sum is σ = 90884448. Its totient is φ = 87407760.

The previous prime is 89139943. The next prime is 89139961. The reversal of 89139949 is 94993198.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89139949 - 2⁵ = 89139917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89139896 and 89139905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89139943) 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 7 ways as a sum of consecutive naturals, for example, 12279 + ... + 18139.

It is an arithmetic number, because the mean of its divisors is an integer number (11360556).

Almost surely, 2^89139949 is an apocalyptic number.

It is an amenable number.

89139949 is a deficient number, since it is larger than the sum of its proper divisors (1744499).

89139949 is a wasteful number, since it uses less digits than its factorization.

89139949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155.

The product of its digits is 629856, while the sum is 52.

The square root of 89139949 is about 9441.3955006662. The cubic root of 89139949 is about 446.7084082052.

The spelling of 89139949 in words is "eighty-nine million, one hundred thirty-nine thousand, nine hundred forty-nine".