89311951 has 4 divisors (see below), whose sum is σ = 94012600. Its totient is φ = 84611304.

The previous prime is 89311933. The next prime is 89311973. The reversal of 89311951 is 15911398.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89311951 - 2¹³ = 89303759 is a prime.

It is the 9451-st Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89311951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89311151) by changing a digit.

It is a nontrivial repunit in base 9450.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2350296 + ... + 2350333.

It is an arithmetic number, because the mean of its divisors is an integer number (23503150).

Almost surely, 2^89311951 is an apocalyptic number.

89311951 is a deficient number, since it is larger than the sum of its proper divisors (4700649).

89311951 is a wasteful number, since it uses less digits than its factorization.

89311951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4700648.

The product of its digits is 9720, while the sum is 37.

The square root of 89311951 is about 9450.5000396804. The cubic root of 89311951 is about 446.9955423652.

The spelling of 89311951 in words is "eighty-nine million, three hundred eleven thousand, nine hundred fifty-one".