49129739 has 2 divisors, whose sum is σ = 49129740. Its totient is φ = 49129738.

The previous prime is 49129723. The next prime is 49129753. The reversal of 49129739 is 93792194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49129739 - 2⁴ = 49129723 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49129739.

It is not a weakly prime, because it can be changed into another prime (49129789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24564869 + 24564870.

It is an arithmetic number, because the mean of its divisors is an integer number (24564870).

Almost surely, 2^49129739 is an apocalyptic number.

49129739 is a deficient number, since it is larger than the sum of its proper divisors (1).

49129739 is an equidigital number, since it uses as much as digits as its factorization.

49129739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 49129739 is about 7009.2609453494. The cubic root of 49129739 is about 366.2532487374.

The spelling of 49129739 in words is "forty-nine million, one hundred twenty-nine thousand, seven hundred thirty-nine".