89997711431 has 4 divisors (see below), whose sum is σ = 91695781512. Its totient is φ = 88299641352.

The previous prime is 89997711383. The next prime is 89997711487. The reversal of 89997711431 is 13411779998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13411779998 = 2 ⋅6705889999.

It is a cyclic number.

It is not a de Polignac number, because 89997711431 - 2²² = 89993517127 is a prime.

It is a super-2 number, since 2×89997711431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89997711631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849034961 + ... + 849035066.

It is an arithmetic number, because the mean of its divisors is an integer number (22923945378).

Almost surely, 2^89997711431 is an apocalyptic number.

89997711431 is a deficient number, since it is larger than the sum of its proper divisors (1698070081).

89997711431 is a wasteful number, since it uses less digits than its factorization.

89997711431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698070080.

The product of its digits is 3429216, while the sum is 59.

The spelling of 89997711431 in words is "eighty-nine billion, nine hundred ninety-seven million, seven hundred eleven thousand, four hundred thirty-one".