49313309 has 4 divisors (see below), whose sum is σ = 49426080. Its totient is φ = 49200540.

The previous prime is 49313291. The next prime is 49313323. The reversal of 49313309 is 90331394.

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: 90331394 = 2 ⋅45165697.

It is a cyclic number.

It is not a de Polignac number, because 49313309 - 2¹² = 49309213 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 (49313359) 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, 55727 + ... + 56604.

It is an arithmetic number, because the mean of its divisors is an integer number (12356520).

Almost surely, 2^49313309 is an apocalyptic number.

It is an amenable number.

49313309 is a deficient number, since it is larger than the sum of its proper divisors (112771).

49313309 is a wasteful number, since it uses less digits than its factorization.

49313309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112770.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 49313309 is about 7022.3435546832. The cubic root of 49313309 is about 366.7088420724.

The spelling of 49313309 in words is "forty-nine million, three hundred thirteen thousand, three hundred nine".