90177089 has 4 divisors (see below), whose sum is σ = 94097856. Its totient is φ = 86256324.

The previous prime is 90177079. The next prime is 90177091. The reversal of 90177089 is 98077109.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90177089 - 2⁸ = 90176833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90177079) 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 3 ways as a sum of consecutive naturals, for example, 1960349 + ... + 1960394.

It is an arithmetic number, because the mean of its divisors is an integer number (23524464).

Almost surely, 2^90177089 is an apocalyptic number.

It is an amenable number.

90177089 is a deficient number, since it is larger than the sum of its proper divisors (3920767).

90177089 is a wasteful number, since it uses less digits than its factorization.

90177089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3920766.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 90177089 is about 9496.1618035920. The cubic root of 90177089 is about 448.4342107809.

The spelling of 90177089 in words is "ninety million, one hundred seventy-seven thousand, eighty-nine".