49690013 has 2 divisors, whose sum is σ = 49690014. Its totient is φ = 49690012.

The previous prime is 49690009. The next prime is 49690033. The reversal of 49690013 is 31009694.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44863204 + 4826809 = 6698^2 + 2197^2 .

It is a cyclic number.

It is not a de Polignac number, because 49690013 - 2² = 49690009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49690033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24845006 + 24845007.

It is an arithmetic number, because the mean of its divisors is an integer number (24845007).

Almost surely, 2^49690013 is an apocalyptic number.

It is an amenable number.

49690013 is a deficient number, since it is larger than the sum of its proper divisors (1).

49690013 is an equidigital number, since it uses as much as digits as its factorization.

49690013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 49690013 is about 7049.1143415326. The cubic root of 49690013 is about 367.6402364822.

It can be divided in two parts, 496 and 90013, that added together give a palindrome (90509).

The spelling of 49690013 in words is "forty-nine million, six hundred ninety thousand, thirteen".