90055239 has 8 divisors (see below), whose sum is σ = 127136880. Its totient is φ = 56505216.

The previous prime is 90055219. The next prime is 90055241. The reversal of 90055239 is 93255009.

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

It is not a de Polignac number, because 90055239 - 2⁷ = 90055111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90055219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882844 + ... + 882945.

It is an arithmetic number, because the mean of its divisors is an integer number (15892110).

Almost surely, 2^90055239 is an apocalyptic number.

90055239 is a deficient number, since it is larger than the sum of its proper divisors (37081641).

90055239 is a wasteful number, since it uses less digits than its factorization.

90055239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765809.

The product of its (nonzero) digits is 12150, while the sum is 33.

The square root of 90055239 is about 9489.7438848475. The cubic root of 90055239 is about 448.2321404662.

The spelling of 90055239 in words is "ninety million, fifty-five thousand, two hundred thirty-nine".