90489755 has 8 divisors (see below), whose sum is σ = 108667824. Its totient is φ = 72338400.

The previous prime is 90489727. The next prime is 90489757. The reversal of 90489755 is 55798409.

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

It is not a de Polignac number, because 90489755 - 2⁸ = 90489499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90489757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1745 + ... + 13565.

It is an arithmetic number, because the mean of its divisors is an integer number (13583478).

Almost surely, 2^90489755 is an apocalyptic number.

90489755 is a deficient number, since it is larger than the sum of its proper divisors (18178069).

90489755 is a wasteful number, since it uses less digits than its factorization.

90489755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13357.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 90489755 is about 9512.6103147349. The cubic root of 90489755 is about 448.9518899251.

The spelling of 90489755 in words is "ninety million, four hundred eighty-nine thousand, seven hundred fifty-five".