49399729 has 2 divisors, whose sum is σ = 49399730. Its totient is φ = 49399728.

The previous prime is 49399687. The next prime is 49399759. The reversal of 49399729 is 92799394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46991025 + 2408704 = 6855^2 + 1552^2 .

It is a cyclic number.

It is not a de Polignac number, because 49399729 - 2¹⁷ = 49268657 is a prime.

It is not a weakly prime, because it can be changed into another prime (49399759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24699864 + 24699865.

It is an arithmetic number, because the mean of its divisors is an integer number (24699865).

Almost surely, 2^49399729 is an apocalyptic number.

It is an amenable number.

49399729 is a deficient number, since it is larger than the sum of its proper divisors (1).

49399729 is an equidigital number, since it uses as much as digits as its factorization.

49399729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 52.

The square root of 49399729 is about 7028.4940776812. The cubic root of 49399729 is about 366.9229322393.

The spelling of 49399729 in words is "forty-nine million, three hundred ninety-nine thousand, seven hundred twenty-nine".