89172893 has 2 divisors, whose sum is σ = 89172894. Its totient is φ = 89172892.

The previous prime is 89172877. The next prime is 89172917. The reversal of 89172893 is 39827198.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67289209 + 21883684 = 8203^2 + 4678^2 .

It is a cyclic number.

It is not a de Polignac number, because 89172893 - 2⁴ = 89172877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89174893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44586446 + 44586447.

It is an arithmetic number, because the mean of its divisors is an integer number (44586447).

Almost surely, 2^89172893 is an apocalyptic number.

It is an amenable number.

89172893 is a deficient number, since it is larger than the sum of its proper divisors (1).

89172893 is an equidigital number, since it uses as much as digits as its factorization.

89172893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 47.

The square root of 89172893 is about 9443.1399968443. The cubic root of 89172893 is about 446.7634323532.

The spelling of 89172893 in words is "eighty-nine million, one hundred seventy-two thousand, eight hundred ninety-three".