90413855 has 8 divisors (see below), whose sum is σ = 123996192. Its totient is φ = 61998048.

The previous prime is 90413833. The next prime is 90413863. The reversal of 90413855 is 55831409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90413855 - 2¹⁴ = 90397471 is a prime.

It is a super-2 number, since 2×90413855² = 16349330351922050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 2583253 = 90413855 / (9 + 0 + 4 + 1 + 3 + 8 + 5 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1291592 + ... + 1291661.

It is an arithmetic number, because the mean of its divisors is an integer number (15499524).

Almost surely, 2^90413855 is an apocalyptic number.

90413855 is a deficient number, since it is larger than the sum of its proper divisors (33582337).

90413855 is a wasteful number, since it uses less digits than its factorization.

90413855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583265.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 90413855 is about 9508.6200365773. The cubic root of 90413855 is about 448.8263325069.

The spelling of 90413855 in words is "ninety million, four hundred thirteen thousand, eight hundred fifty-five".