90618079 has 6 divisors (see below), whose sum is σ = 91571424. Its totient is φ = 89674560.

The previous prime is 90618037. The next prime is 90618083. The reversal of 90618079 is 97081609.

It is not a de Polignac number, because 90618079 - 2¹⁵ = 90585311 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 (90618019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4594 + ... + 14224.

It is an arithmetic number, because the mean of its divisors is an integer number (15261904).

Almost surely, 2^90618079 is an apocalyptic number.

90618079 is a deficient number, since it is larger than the sum of its proper divisors (953345).

90618079 is an frugal number, since it uses more digits than its factorization.

90618079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9825 (or 9728 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 90618079 is about 9519.3528666606. The cubic root of 90618079 is about 449.1640100367.

The spelling of 90618079 in words is "ninety million, six hundred eighteen thousand, seventy-nine".