90289131843 has 4 divisors (see below), whose sum is σ = 120385509128. Its totient is φ = 60192754560.

The previous prime is 90289131799. The next prime is 90289131847. The reversal of 90289131843 is 34813198209.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90289131843 - 2²⁰ = 90288083267 is a prime.

It is the 300482-nd Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90289131792 and 90289131801.

It is not an unprimeable number, because it can be changed into a prime (90289131847) by changing a digit.

It is a nontrivial repunit in base 300481.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15048188638 + ... + 15048188643.

It is an arithmetic number, because the mean of its divisors is an integer number (30096377282).

Almost surely, 2^90289131843 is an apocalyptic number.

90289131843 is a deficient number, since it is larger than the sum of its proper divisors (30096377285).

90289131843 is a wasteful number, since it uses less digits than its factorization.

90289131843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30096377284.

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 90289131843 in words is "ninety billion, two hundred eighty-nine million, one hundred thirty-one thousand, eight hundred forty-three".