49930913 has 4 divisors (see below), whose sum is σ = 49952148. Its totient is φ = 49909680.

The previous prime is 49930901. The next prime is 49930927. The reversal of 49930913 is 31903994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31903994 = 2 ⋅15951997.

It can be written as a sum of positive squares in 2 ways, for example, as 21967969 + 27962944 = 4687^2 + 5288^2 .

It is a cyclic number.

It is not a de Polignac number, because 49930913 - 2⁴ = 49930897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49935913) 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, 6578 + ... + 11963.

It is an arithmetic number, because the mean of its divisors is an integer number (12488037).

Almost surely, 2^49930913 is an apocalyptic number.

It is an amenable number.

49930913 is a deficient number, since it is larger than the sum of its proper divisors (21235).

49930913 is a wasteful number, since it uses less digits than its factorization.

49930913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21234.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 49930913 is about 7066.1809345643. The cubic root of 49930913 is about 368.2333925304.

The spelling of 49930913 in words is "forty-nine million, nine hundred thirty thousand, nine hundred thirteen".