49171799 has 2 divisors, whose sum is σ = 49171800. Its totient is φ = 49171798.

The previous prime is 49171789. The next prime is 49171813. The reversal of 49171799 is 99717194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49171799 - 2⁸ = 49171543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49171709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24585899 + 24585900.

It is an arithmetic number, because the mean of its divisors is an integer number (24585900).

Almost surely, 2^49171799 is an apocalyptic number.

49171799 is a deficient number, since it is larger than the sum of its proper divisors (1).

49171799 is an equidigital number, since it uses as much as digits as its factorization.

49171799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 47.

The square root of 49171799 is about 7012.2606198002. The cubic root of 49171799 is about 366.3577354704.

The spelling of 49171799 in words is "forty-nine million, one hundred seventy-one thousand, seven hundred ninety-nine".