90225879 has 8 divisors (see below), whose sum is σ = 121039872. Its totient is φ = 59781240.

The previous prime is 90225847. The next prime is 90225913. The reversal of 90225879 is 97852209.

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

It is not a de Polignac number, because 90225879 - 2⁵ = 90225847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90225879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90225829) 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, 91767 + ... + 92744.

It is an arithmetic number, because the mean of its divisors is an integer number (15129984).

Almost surely, 2^90225879 is an apocalyptic number.

90225879 is a deficient number, since it is larger than the sum of its proper divisors (30813993).

90225879 is a wasteful number, since it uses less digits than its factorization.

90225879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184677.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 90225879 is about 9498.7303888467. The cubic root of 90225879 is about 448.5150707891.

The spelling of 90225879 in words is "ninety million, two hundred twenty-five thousand, eight hundred seventy-nine".