89477131 has 2 divisors, whose sum is σ = 89477132. Its totient is φ = 89477130.

The previous prime is 89477117. The next prime is 89477147. The reversal of 89477131 is 13177498.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89477131 is a prime.

It is a super-2 number, since 2×89477131² = 16012313943982322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89471131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44738565 + 44738566.

It is an arithmetic number, because the mean of its divisors is an integer number (44738566).

Almost surely, 2^89477131 is an apocalyptic number.

89477131 is a deficient number, since it is larger than the sum of its proper divisors (1).

89477131 is an equidigital number, since it uses as much as digits as its factorization.

89477131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 40.

The square root of 89477131 is about 9459.2352227862. The cubic root of 89477131 is about 447.2709413129.

The spelling of 89477131 in words is "eighty-nine million, four hundred seventy-seven thousand, one hundred thirty-one".