49439993 has 2 divisors, whose sum is σ = 49439994. Its totient is φ = 49439992.

The previous prime is 49439989. The next prime is 49440007. The reversal of 49439993 is 39993494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47513449 + 1926544 = 6893^2 + 1388^2 .

It is a cyclic number.

It is not a de Polignac number, because 49439993 - 2² = 49439989 is a prime.

It is not a weakly prime, because it can be changed into another prime (49439953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24719996 + 24719997.

It is an arithmetic number, because the mean of its divisors is an integer number (24719997).

Almost surely, 2^49439993 is an apocalyptic number.

It is an amenable number.

49439993 is a deficient number, since it is larger than the sum of its proper divisors (1).

49439993 is an equidigital number, since it uses as much as digits as its factorization.

49439993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 50.

The square root of 49439993 is about 7031.3578347287. The cubic root of 49439993 is about 367.0225938717.

The spelling of 49439993 in words is "forty-nine million, four hundred thirty-nine thousand, nine hundred ninety-three".