90469285 has 16 divisors (see below), whose sum is σ = 109866240. Its totient is φ = 71513280.

The previous prime is 90469277. The next prime is 90469289. The reversal of 90469285 is 58296409.

It is not a de Polignac number, because 90469285 - 2³ = 90469277 is a prime.

It is a super-2 number, since 2×90469285² = 16369383056822450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90469289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242359 + ... + 242731.

It is an arithmetic number, because the mean of its divisors is an integer number (6866640).

Almost surely, 2^90469285 is an apocalyptic number.

It is an amenable number.

90469285 is a deficient number, since it is larger than the sum of its proper divisors (19396955).

90469285 is a wasteful number, since it uses less digits than its factorization.

90469285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 90469285 is about 9511.5343136636. The cubic root of 90469285 is about 448.9180343863.

The spelling of 90469285 in words is "ninety million, four hundred sixty-nine thousand, two hundred eighty-five".