49090903 has 4 divisors (see below), whose sum is σ = 49222888. Its totient is φ = 48958920.

The previous prime is 49090871. The next prime is 49090919. The reversal of 49090903 is 30909094.

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 49090903 - 2⁵ = 49090871 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49090963) 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, 65433 + ... + 66178.

It is an arithmetic number, because the mean of its divisors is an integer number (12305722).

Almost surely, 2^49090903 is an apocalyptic number.

49090903 is a deficient number, since it is larger than the sum of its proper divisors (131985).

49090903 is a wasteful number, since it uses less digits than its factorization.

49090903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131984.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 49090903 is about 7006.4900627918. The cubic root of 49090903 is about 366.1567181976.

Adding to 49090903 its reverse (30909094), we get a palindrome (79999997).

The spelling of 49090903 in words is "forty-nine million, ninety thousand, nine hundred three".