90099055 has 8 divisors (see below), whose sum is σ = 108568944. Its totient is φ = 71779200.

The previous prime is 90099001. The next prime is 90099091. The reversal of 90099055 is 55099009.

It is a happy number.

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

It is not a de Polignac number, because 90099055 - 2⁹ = 90098543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36181 + ... + 38590.

It is an arithmetic number, because the mean of its divisors is an integer number (13571118).

Almost surely, 2^90099055 is an apocalyptic number.

90099055 is a deficient number, since it is larger than the sum of its proper divisors (18469889).

90099055 is a wasteful number, since it uses less digits than its factorization.

90099055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75017.

The product of its (nonzero) digits is 18225, while the sum is 37.

The square root of 90099055 is about 9492.0522017107. The cubic root of 90099055 is about 448.3048238375.

The spelling of 90099055 in words is "ninety million, ninety-nine thousand, fifty-five".