90484189 has 4 divisors (see below), whose sum is σ = 91175040. Its totient is φ = 89793340.

The previous prime is 90484181. The next prime is 90484241. The reversal of 90484189 is 98148409.

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 90484189 - 2³ = 90484181 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 (90484181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345229 + ... + 345490.

It is an arithmetic number, because the mean of its divisors is an integer number (22793760).

Almost surely, 2^90484189 is an apocalyptic number.

It is an amenable number.

90484189 is a deficient number, since it is larger than the sum of its proper divisors (690851).

90484189 is a wasteful number, since it uses less digits than its factorization.

90484189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690850.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 90484189 is about 9512.3177512108. The cubic root of 90484189 is about 448.9426847672.

The spelling of 90484189 in words is "ninety million, four hundred eighty-four thousand, one hundred eighty-nine".