89513491 has 2 divisors, whose sum is σ = 89513492. Its totient is φ = 89513490.

The previous prime is 89513467. The next prime is 89513507. The reversal of 89513491 is 19431598.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89513491 is a prime.

It is not a weakly prime, because it can be changed into another prime (89513191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44756745 + 44756746.

It is an arithmetic number, because the mean of its divisors is an integer number (44756746).

Almost surely, 2^89513491 is an apocalyptic number.

89513491 is a deficient number, since it is larger than the sum of its proper divisors (1).

89513491 is an equidigital number, since it uses as much as digits as its factorization.

89513491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 40.

The square root of 89513491 is about 9461.1569588502. The cubic root of 89513491 is about 447.3315175700.

The spelling of 89513491 in words is "eighty-nine million, five hundred thirteen thousand, four hundred ninety-one".