89872949 has 4 divisors (see below), whose sum is σ = 90343680. Its totient is φ = 89402220.

The previous prime is 89872903. The next prime is 89872961. The reversal of 89872949 is 94927898.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89872949 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89872894 and 89872903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89872969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235079 + ... + 235460.

It is an arithmetic number, because the mean of its divisors is an integer number (22585920).

Almost surely, 2^89872949 is an apocalyptic number.

It is an amenable number.

89872949 is a deficient number, since it is larger than the sum of its proper divisors (470731).

89872949 is a wasteful number, since it uses less digits than its factorization.

89872949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470730.

The product of its digits is 2612736, while the sum is 56.

The square root of 89872949 is about 9480.1344399750. The cubic root of 89872949 is about 447.9294986981.

The spelling of 89872949 in words is "eighty-nine million, eight hundred seventy-two thousand, nine hundred forty-nine".