49516309 has 4 divisors (see below), whose sum is σ = 51669216. Its totient is φ = 47363404.

The previous prime is 49516277. The next prime is 49516319. The reversal of 49516309 is 90361594.

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 49516309 - 2⁵ = 49516277 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 (49516319) 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, 1076419 + ... + 1076464.

It is an arithmetic number, because the mean of its divisors is an integer number (12917304).

Almost surely, 2^49516309 is an apocalyptic number.

It is an amenable number.

49516309 is a deficient number, since it is larger than the sum of its proper divisors (2152907).

49516309 is a wasteful number, since it uses less digits than its factorization.

49516309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152906.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 49516309 is about 7036.7825744441. The cubic root of 49516309 is about 367.2113432014.

The spelling of 49516309 in words is "forty-nine million, five hundred sixteen thousand, three hundred nine".