49309013 has 4 divisors (see below), whose sum is σ = 53102028. Its totient is φ = 45516000.

The previous prime is 49308997. The next prime is 49309031. The reversal of 49309013 is 31090394.

49309013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31090394 = 2 ⋅15545197.

It can be written as a sum of positive squares in 2 ways, for example, as 7409284 + 41899729 = 2722^2 + 6473^2 .

It is a cyclic number.

It is not a de Polignac number, because 49309013 - 2⁴ = 49308997 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 (49309213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1896488 + ... + 1896513.

It is an arithmetic number, because the mean of its divisors is an integer number (13275507).

Almost surely, 2^49309013 is an apocalyptic number.

It is an amenable number.

49309013 is a deficient number, since it is larger than the sum of its proper divisors (3793015).

49309013 is a wasteful number, since it uses less digits than its factorization.

49309013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793014.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 49309013 is about 7022.0376672302. The cubic root of 49309013 is about 366.6981929734.

The spelling of 49309013 in words is "forty-nine million, three hundred nine thousand, thirteen".