90454869 has 12 divisors (see below), whose sum is σ = 134872192. Its totient is φ = 58357800.

The previous prime is 90454831. The next prime is 90454873. The reversal of 90454869 is 96845409.

It is a happy number.

It is not a de Polignac number, because 90454869 - 2²⁰ = 89406293 is a prime.

It is a super-2 number, since 2×90454869² = 16364166651614322, which 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 (90454829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161827 + ... + 162384.

Almost surely, 2^90454869 is an apocalyptic number.

It is an amenable number.

90454869 is a deficient number, since it is larger than the sum of its proper divisors (44417323).

90454869 is a wasteful number, since it uses less digits than its factorization.

90454869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324248 (or 324245 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 90454869 is about 9510.7764667245. The cubic root of 90454869 is about 448.8941885541.

The spelling of 90454869 in words is "ninety million, four hundred fifty-four thousand, eight hundred sixty-nine".