90549459 has 144 divisors (see below), whose sum is σ = 193240320. Its totient is φ = 39346560.

The previous prime is 90549451. The next prime is 90549467. The reversal of 90549459 is 95494509.

It is an interprime number because it is at equal distance from previous prime (90549451) and next prime (90549467).

It is not a de Polignac number, because 90549459 - 2³ = 90549451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90549451) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3936922 + ... + 3936944.

Almost surely, 2^90549459 is an apocalyptic number.

90549459 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

90549459 is an abundant number, since it is smaller than the sum of its proper divisors (102690861).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90549459 is a wasteful number, since it uses less digits than its factorization.

90549459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 90549459 is about 9515.7479474816. The cubic root of 90549459 is about 449.0506058176.

The spelling of 90549459 in words is "ninety million, five hundred forty-nine thousand, four hundred fifty-nine".