90891548 has 12 divisors (see below), whose sum is σ = 173520312. Its totient is φ = 41314320.

The previous prime is 90891533. The next prime is 90891553. The reversal of 90891548 is 84519809.

It is a super-2 number, since 2×90891548² = 16522546995672608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 2065717 = 90891548 / (9 + 0 + 8 + 9 + 1 + 5 + 4 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 90891499 and 90891508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032815 + ... + 1032902.

It is an arithmetic number, because the mean of its divisors is an integer number (14460026).

Almost surely, 2^90891548 is an apocalyptic number.

It is an amenable number.

90891548 is a deficient number, since it is larger than the sum of its proper divisors (82628764).

90891548 is a wasteful number, since it uses less digits than its factorization.

90891548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065732 (or 2065730 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 90891548 is about 9533.7058901563. The cubic root of 90891548 is about 449.6153882412.

The spelling of 90891548 in words is "ninety million, eight hundred ninety-one thousand, five hundred forty-eight".