90449079 has 8 divisors (see below), whose sum is σ = 137827200. Its totient is φ = 51685176.

The previous prime is 90449077. The next prime is 90449083. The reversal of 90449079 is 97094409.

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

It is not a de Polignac number, because 90449079 - 2¹ = 90449077 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 90449079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90449077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2153529 + ... + 2153570.

It is an arithmetic number, because the mean of its divisors is an integer number (17228400).

Almost surely, 2^90449079 is an apocalyptic number.

90449079 is a deficient number, since it is larger than the sum of its proper divisors (47378121).

90449079 is a wasteful number, since it uses less digits than its factorization.

90449079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4307109.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 90449079 is about 9510.4720703023. The cubic root of 90449079 is about 448.8846104708.

The spelling of 90449079 in words is "ninety million, four hundred forty-nine thousand, seventy-nine".