49693309 has 4 divisors (see below), whose sum is σ = 49784704. Its totient is φ = 49601916.

The previous prime is 49693289. The next prime is 49693333. The reversal of 49693309 is 90339694.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90339694 = 2 ⋅45169847.

It is a cyclic number.

It is not a de Polignac number, because 49693309 - 2¹¹ = 49691261 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 (49693339) 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, 44877 + ... + 45970.

It is an arithmetic number, because the mean of its divisors is an integer number (12446176).

Almost surely, 2^49693309 is an apocalyptic number.

It is an amenable number.

49693309 is a deficient number, since it is larger than the sum of its proper divisors (91395).

49693309 is an equidigital number, since it uses as much as digits as its factorization.

49693309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91394.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 49693309 is about 7049.3481258908. The cubic root of 49693309 is about 367.6483649796.

The spelling of 49693309 in words is "forty-nine million, six hundred ninety-three thousand, three hundred nine".