90299271 has 8 divisors (see below), whose sum is σ = 121064944. Its totient is φ = 59866560.

The previous prime is 90299239. The next prime is 90299273. The reversal of 90299271 is 17299209.

It is a happy number.

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

It is not a de Polignac number, because 90299271 - 2⁵ = 90299239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90299273) 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, 82606 + ... + 83691.

It is an arithmetic number, because the mean of its divisors is an integer number (15133118).

Almost surely, 2^90299271 is an apocalyptic number.

90299271 is a deficient number, since it is larger than the sum of its proper divisors (30765673).

90299271 is a wasteful number, since it uses less digits than its factorization.

90299271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166481.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 90299271 is about 9502.5928566892. The cubic root of 90299271 is about 448.6366489777.

The spelling of 90299271 in words is "ninety million, two hundred ninety-nine thousand, two hundred seventy-one".