89779453 has 2 divisors, whose sum is σ = 89779454. Its totient is φ = 89779452.

The previous prime is 89779433. The next prime is 89779457. The reversal of 89779453 is 35497798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82391929 + 7387524 = 9077^2 + 2718^2 .

It is a cyclic number.

It is not a de Polignac number, because 89779453 - 2⁵ = 89779421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89779453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89779457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44889726 + 44889727.

It is an arithmetic number, because the mean of its divisors is an integer number (44889727).

Almost surely, 2^89779453 is an apocalyptic number.

It is an amenable number.

89779453 is a deficient number, since it is larger than the sum of its proper divisors (1).

89779453 is an equidigital number, since it uses as much as digits as its factorization.

89779453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The square root of 89779453 is about 9475.2020031237. The cubic root of 89779453 is about 447.7741158385.

The spelling of 89779453 in words is "eighty-nine million, seven hundred seventy-nine thousand, four hundred fifty-three".