49049509 has 2 divisors, whose sum is σ = 49049510. Its totient is φ = 49049508.

The previous prime is 49049467. The next prime is 49049513. The reversal of 49049509 is 90594094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38713284 + 10336225 = 6222^2 + 3215^2 .

It is a cyclic number.

It is not a de Polignac number, because 49049509 - 2¹⁵ = 49016741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49049579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24524754 + 24524755.

It is an arithmetic number, because the mean of its divisors is an integer number (24524755).

Almost surely, 2^49049509 is an apocalyptic number.

It is an amenable number.

49049509 is a deficient number, since it is larger than the sum of its proper divisors (1).

49049509 is an equidigital number, since it uses as much as digits as its factorization.

49049509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 49049509 is about 7003.5354643209. The cubic root of 49049509 is about 366.0537734403.

The spelling of 49049509 in words is "forty-nine million, forty-nine thousand, five hundred nine".