89786491 has 2 divisors, whose sum is σ = 89786492. Its totient is φ = 89786490.

The previous prime is 89786471. The next prime is 89786513. The reversal of 89786491 is 19468798.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89786491 - 2⁷ = 89786363 is a prime.

It is a super-2 number, since 2×89786491² = 16123227932186162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89786471) 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, 44893245 + 44893246.

It is an arithmetic number, because the mean of its divisors is an integer number (44893246).

Almost surely, 2^89786491 is an apocalyptic number.

89786491 is a deficient number, since it is larger than the sum of its proper divisors (1).

89786491 is an equidigital number, since it uses as much as digits as its factorization.

89786491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 52.

The square root of 89786491 is about 9475.5733863445. The cubic root of 89786491 is about 447.7858161841.

The spelling of 89786491 in words is "eighty-nine million, seven hundred eighty-six thousand, four hundred ninety-one".