89375813 has 2 divisors, whose sum is σ = 89375814. Its totient is φ = 89375812.

The previous prime is 89375743. The next prime is 89375833. The reversal of 89375813 is 31857398.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87572164 + 1803649 = 9358^2 + 1343^2 .

It is a cyclic number.

It is not a de Polignac number, because 89375813 - 2¹⁸ = 89113669 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89375833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44687906 + 44687907.

It is an arithmetic number, because the mean of its divisors is an integer number (44687907).

Almost surely, 2^89375813 is an apocalyptic number.

It is an amenable number.

89375813 is a deficient number, since it is larger than the sum of its proper divisors (1).

89375813 is an equidigital number, since it uses as much as digits as its factorization.

89375813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 89375813 is about 9453.8781989192. The cubic root of 89375813 is about 447.1020575173.

The spelling of 89375813 in words is "eighty-nine million, three hundred seventy-five thousand, eight hundred thirteen".