90101903 has 4 divisors (see below), whose sum is σ = 93008448. Its totient is φ = 87195360.

The previous prime is 90101897. The next prime is 90101923. The reversal of 90101903 is 30910109.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90101903 - 2⁶ = 90101839 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 (90101923) 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, 1453226 + ... + 1453287.

It is an arithmetic number, because the mean of its divisors is an integer number (23252112).

Almost surely, 2^90101903 is an apocalyptic number.

90101903 is a deficient number, since it is larger than the sum of its proper divisors (2906545).

90101903 is a wasteful number, since it uses less digits than its factorization.

90101903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906544.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 90101903 is about 9492.2022207705. The cubic root of 90101903 is about 448.3095473746.

The spelling of 90101903 in words is "ninety million, one hundred one thousand, nine hundred three".