90131469 has 8 divisors (see below), whose sum is σ = 120462432. Its totient is φ = 59944080.

The previous prime is 90131453. The next prime is 90131473. The reversal of 90131469 is 96413109.

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

It is not a de Polignac number, because 90131469 - 2⁴ = 90131453 is a prime.

It is a super-2 number, since 2×90131469² = 16247363408195922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90131479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34419 + ... + 36944.

It is an arithmetic number, because the mean of its divisors is an integer number (15057804).

Almost surely, 2^90131469 is an apocalyptic number.

It is an amenable number.

90131469 is a deficient number, since it is larger than the sum of its proper divisors (30330963).

90131469 is a wasteful number, since it uses less digits than its factorization.

90131469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71787.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 90131469 is about 9493.7594766246. The cubic root of 90131469 is about 448.3585780466.

The spelling of 90131469 in words is "ninety million, one hundred thirty-one thousand, four hundred sixty-nine".