49138907 has 2 divisors, whose sum is σ = 49138908. Its totient is φ = 49138906.

The previous prime is 49138867. The next prime is 49138909. The reversal of 49138907 is 70983194.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49138907 - 2²⁴ = 32361691 is a prime.

Together with 49138909, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49138909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24569453 + 24569454.

It is an arithmetic number, because the mean of its divisors is an integer number (24569454).

Almost surely, 2^49138907 is an apocalyptic number.

49138907 is a deficient number, since it is larger than the sum of its proper divisors (1).

49138907 is an equidigital number, since it uses as much as digits as its factorization.

49138907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 49138907 is about 7009.9149067589. The cubic root of 49138907 is about 366.2760292434.

The spelling of 49138907 in words is "forty-nine million, one hundred thirty-eight thousand, nine hundred seven".