49509913 has 2 divisors, whose sum is σ = 49509914. Its totient is φ = 49509912.

The previous prime is 49509893. The next prime is 49509923. The reversal of 49509913 is 31990594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29680704 + 19829209 = 5448^2 + 4453^2 .

It is a cyclic number.

It is not a de Polignac number, because 49509913 - 2¹³ = 49501721 is a prime.

It is not a weakly prime, because it can be changed into another prime (49509923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24754956 + 24754957.

It is an arithmetic number, because the mean of its divisors is an integer number (24754957).

Almost surely, 2^49509913 is an apocalyptic number.

It is an amenable number.

49509913 is a deficient number, since it is larger than the sum of its proper divisors (1).

49509913 is an equidigital number, since it uses as much as digits as its factorization.

49509913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 49509913 is about 7036.3280907019. The cubic root of 49509913 is about 367.1955316776.

The spelling of 49509913 in words is "forty-nine million, five hundred nine thousand, nine hundred thirteen".