90104201 has 4 divisors (see below), whose sum is σ = 98295504. Its totient is φ = 81912900.

The previous prime is 90104191. The next prime is 90104207. The reversal of 90104201 is 10240109.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-90104201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90104201.

It is not an unprimeable number, because it can be changed into a prime (90104207) 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, 4095635 + ... + 4095656.

It is an arithmetic number, because the mean of its divisors is an integer number (24573876).

Almost surely, 2^90104201 is an apocalyptic number.

It is an amenable number.

90104201 is a deficient number, since it is larger than the sum of its proper divisors (8191303).

90104201 is a wasteful number, since it uses less digits than its factorization.

90104201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8191302.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 90104201 is about 9492.3232667245. The cubic root of 90104201 is about 448.3133586392.

The spelling of 90104201 in words is "ninety million, one hundred four thousand, two hundred one".