90906909103 has 4 divisors (see below), whose sum is σ = 90934451608. Its totient is φ = 90879366600.

The previous prime is 90906909089. The next prime is 90906909133. The reversal of 90906909103 is 30190960909.

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 90906909103 - 2¹³ = 90906900911 is a prime.

It is a super-2 number, since 2×90906909103² (a number of 23 digits) contains 22 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 (90906909133) 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, 13766301 + ... + 13772902.

It is an arithmetic number, because the mean of its divisors is an integer number (22733612902).

Almost surely, 2^90906909103 is an apocalyptic number.

90906909103 is a deficient number, since it is larger than the sum of its proper divisors (27542505).

90906909103 is a wasteful number, since it uses less digits than its factorization.

90906909103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27542504.

The product of its (nonzero) digits is 118098, while the sum is 46.

The spelling of 90906909103 in words is "ninety billion, nine hundred six million, nine hundred nine thousand, one hundred three".