89391513 has 4 divisors (see below), whose sum is σ = 119188688. Its totient is φ = 59594340.

The previous prime is 89391503. The next prime is 89391529. The reversal of 89391513 is 31519398.

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 not a de Polignac number, because 89391513 - 2⁵ = 89391481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89391503) 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, 14898583 + ... + 14898588.

It is an arithmetic number, because the mean of its divisors is an integer number (29797172).

Almost surely, 2^89391513 is an apocalyptic number.

It is an amenable number.

89391513 is a deficient number, since it is larger than the sum of its proper divisors (29797175).

89391513 is a wasteful number, since it uses less digits than its factorization.

89391513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29797174.

The product of its digits is 29160, while the sum is 39.

The square root of 89391513 is about 9454.7085095205. The cubic root of 89391513 is about 447.1282357084.

The spelling of 89391513 in words is "eighty-nine million, three hundred ninety-one thousand, five hundred thirteen".