90180079 has 8 divisors (see below), whose sum is σ = 102655872. Its totient is φ = 78417240.

The previous prime is 90180071. The next prime is 90180089. The reversal of 90180079 is 97008109.

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

It is not a de Polignac number, because 90180079 - 2³ = 90180071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90180071) 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, 177969 + ... + 178474.

It is an arithmetic number, because the mean of its divisors is an integer number (12831984).

Almost surely, 2^90180079 is an apocalyptic number.

90180079 is a deficient number, since it is larger than the sum of its proper divisors (12475793).

90180079 is a wasteful number, since it uses less digits than its factorization.

90180079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356477.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 90180079 is about 9496.3192343139. The cubic root of 90180079 is about 448.4391669676.

The spelling of 90180079 in words is "ninety million, one hundred eighty thousand, seventy-nine".