90883878937 has 4 divisors (see below), whose sum is σ = 91099755556. Its totient is φ = 90668002320.

The previous prime is 90883878907. The next prime is 90883878941. The reversal of 90883878937 is 73987838809.

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

It can be written as a sum of positive squares in 2 ways, for example, as 866478096 + 90017400841 = 29436^2 + 300029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90883878937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90883878907) 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, 107937678 + ... + 107938519.

It is an arithmetic number, because the mean of its divisors is an integer number (22774938889).

Almost surely, 2^90883878937 is an apocalyptic number.

It is an amenable number.

90883878937 is a deficient number, since it is larger than the sum of its proper divisors (215876619).

90883878937 is a wasteful number, since it uses less digits than its factorization.

90883878937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215876618.

The product of its (nonzero) digits is 146313216, while the sum is 70.

The spelling of 90883878937 in words is "ninety billion, eight hundred eighty-three million, eight hundred seventy-eight thousand, nine hundred thirty-seven".