90201279 has 16 divisors (see below), whose sum is σ = 137898752. Its totient is φ = 51375168.

The previous prime is 90201277. The next prime is 90201313. The reversal of 90201279 is 97210209.

It is not a de Polignac number, because 90201279 - 2¹ = 90201277 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 (90201277) 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, 289 + ... + 13434.

It is an arithmetic number, because the mean of its divisors is an integer number (8618672).

Almost surely, 2^90201279 is an apocalyptic number.

90201279 is a deficient number, since it is larger than the sum of its proper divisors (47697473).

90201279 is a wasteful number, since it uses less digits than its factorization.

90201279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14046.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 90201279 is about 9497.4353906726. The cubic root of 90201279 is about 448.4743046816.

The spelling of 90201279 in words is "ninety million, two hundred one thousand, two hundred seventy-nine".