90109000901 has 4 divisors (see below), whose sum is σ = 90135830400. Its totient is φ = 90082171404.

The previous prime is 90109000897. The next prime is 90109000903. The reversal of 90109000901 is 10900090109.

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 90109000901 - 2² = 90109000897 is a prime.

It is a super-3 number, since 3×90109000901³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90109000903) 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, 13409711 + ... + 13416428.

It is an arithmetic number, because the mean of its divisors is an integer number (22533957600).

Almost surely, 2^90109000901 is an apocalyptic number.

It is an amenable number.

90109000901 is a deficient number, since it is larger than the sum of its proper divisors (26829499).

90109000901 is a wasteful number, since it uses less digits than its factorization.

90109000901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26829498.

The product of its (nonzero) digits is 729, while the sum is 29.

The spelling of 90109000901 in words is "ninety billion, one hundred nine million, nine hundred one", and thus it is an aban number.