90099901 has 8 divisors (see below), whose sum is σ = 94129344. Its totient is φ = 86079840.

The previous prime is 90099883. The next prime is 90099907. The reversal of 90099901 is 10999009.

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

It is a cyclic number.

It is not a de Polignac number, because 90099901 - 2⁵ = 90099869 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 (90099907) 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, 23446 + ... + 27016.

It is an arithmetic number, because the mean of its divisors is an integer number (11766168).

Almost surely, 2^90099901 is an apocalyptic number.

It is an amenable number.

90099901 is a deficient number, since it is larger than the sum of its proper divisors (4029443).

90099901 is a wasteful number, since it uses less digits than its factorization.

90099901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691.

The product of its (nonzero) digits is 6561, while the sum is 37.

The square root of 90099901 is about 9492.0967652042. The cubic root of 90099901 is about 448.3062269773.

The spelling of 90099901 in words is "ninety million, ninety-nine thousand, nine hundred one".