89413631 has 2 divisors, whose sum is σ = 89413632. Its totient is φ = 89413630.

The previous prime is 89413607. The next prime is 89413633. The reversal of 89413631 is 13631498.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89413631 is a prime.

It is a super-2 number, since 2×89413631² = 15989594817208322, which contains 22 as substring.

Together with 89413633, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 89413591 and 89413600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89413633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44706815 + 44706816.

It is an arithmetic number, because the mean of its divisors is an integer number (44706816).

Almost surely, 2^89413631 is an apocalyptic number.

89413631 is a deficient number, since it is larger than the sum of its proper divisors (1).

89413631 is an equidigital number, since it uses as much as digits as its factorization.

89413631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 89413631 is about 9455.8781189269. The cubic root of 89413631 is about 447.1651100769.

The spelling of 89413631 in words is "eighty-nine million, four hundred thirteen thousand, six hundred thirty-one".