89715013 has 2 divisors, whose sum is σ = 89715014. Its totient is φ = 89715012.

The previous prime is 89714993. The next prime is 89715049. The reversal of 89715013 is 31051798.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59706529 + 30008484 = 7727^2 + 5478^2 .

It is a cyclic number.

It is not a de Polignac number, because 89715013 - 2¹³ = 89706821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89715013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89715053) 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 as a sum of consecutive naturals, namely, 44857506 + 44857507.

It is an arithmetic number, because the mean of its divisors is an integer number (44857507).

Almost surely, 2^89715013 is an apocalyptic number.

It is an amenable number.

89715013 is a deficient number, since it is larger than the sum of its proper divisors (1).

89715013 is an equidigital number, since it uses as much as digits as its factorization.

89715013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 89715013 is about 9471.8009375197. The cubic root of 89715013 is about 447.6669589135. Note that the first 3 decimals are identical.

The spelling of 89715013 in words is "eighty-nine million, seven hundred fifteen thousand, thirteen".