90177093 has 24 divisors (see below), whose sum is σ = 134053920. Its totient is φ = 58390560.

The previous prime is 90177091. The next prime is 90177107. The reversal of 90177093 is 39077109.

It is not a de Polignac number, because 90177093 - 2¹ = 90177091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90177091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44578 + ... + 46556.

It is an arithmetic number, because the mean of its divisors is an integer number (5585580).

Almost surely, 2^90177093 is an apocalyptic number.

It is an amenable number.

90177093 is a deficient number, since it is larger than the sum of its proper divisors (43876827).

90177093 is a wasteful number, since it uses less digits than its factorization.

90177093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129 (or 2126 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 90177093 is about 9496.1620142034. The cubic root of 90177093 is about 448.4342174113.

It can be divided in two parts, 9017 and 7093, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 90177093 in words is "ninety million, one hundred seventy-seven thousand, ninety-three".