90177090 has 32 divisors (see below), whose sum is σ = 217347840. Its totient is φ = 23944704.

The previous prime is 90177079. The next prime is 90177091. The reversal of 90177090 is 9077109.

It is not an unprimeable number, because it can be changed into a prime (90177091) 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 15 ways as a sum of consecutive naturals, for example, 882 + ... + 13458.

It is an arithmetic number, because the mean of its divisors is an integer number (6792120).

Almost surely, 2^90177090 is an apocalyptic number.

90177090 is an abundant number, since it is smaller than the sum of its proper divisors (127170750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90177090 is a wasteful number, since it uses less digits than its factorization.

90177090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12826.

The product of its (nonzero) digits is 3969, while the sum is 33.

The square root of 90177090 is about 9496.1618562449. The cubic root of 90177090 is about 448.4342124385.

The spelling of 90177090 in words is "ninety million, one hundred seventy-seven thousand, ninety".