89349431 has 2 divisors, whose sum is σ = 89349432. Its totient is φ = 89349430.

The previous prime is 89349349. The next prime is 89349437. The reversal of 89349431 is 13494398.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89349431 is a prime.

It is a super-2 number, since 2×89349431² = 15966641640047522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89349437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44674715 + 44674716.

It is an arithmetic number, because the mean of its divisors is an integer number (44674716).

Almost surely, 2^89349431 is an apocalyptic number.

89349431 is a deficient number, since it is larger than the sum of its proper divisors (1).

89349431 is an equidigital number, since it uses as much as digits as its factorization.

89349431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 89349431 is about 9452.4827955411. The cubic root of 89349431 is about 447.0580612471.

It can be divided in two parts, 8 and 9349431, that added together give a palindrome (9349439).

The spelling of 89349431 in words is "eighty-nine million, three hundred forty-nine thousand, four hundred thirty-one".