49903309 has 4 divisors (see below), whose sum is σ = 50035360. Its totient is φ = 49771260.

The previous prime is 49903303. The next prime is 49903327. The reversal of 49903309 is 90330994.

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 49903309 - 2⁷ = 49903181 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 (49903303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65457 + ... + 66214.

It is an arithmetic number, because the mean of its divisors is an integer number (12508840).

Almost surely, 2^49903309 is an apocalyptic number.

It is an amenable number.

49903309 is a deficient number, since it is larger than the sum of its proper divisors (132051).

49903309 is a wasteful number, since it uses less digits than its factorization.

49903309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132050.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 49903309 is about 7064.2274170641. The cubic root of 49903309 is about 368.1655214949.

The spelling of 49903309 in words is "forty-nine million, nine hundred three thousand, three hundred nine".