49747889 has 2 divisors, whose sum is σ = 49747890. Its totient is φ = 49747888.

The previous prime is 49747849. The next prime is 49747913. The reversal of 49747889 is 98874794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33547264 + 16200625 = 5792^2 + 4025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49747889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49747849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24873944 + 24873945.

It is an arithmetic number, because the mean of its divisors is an integer number (24873945).

Almost surely, 2^49747889 is an apocalyptic number.

It is an amenable number.

49747889 is a deficient number, since it is larger than the sum of its proper divisors (1).

49747889 is an equidigital number, since it uses as much as digits as its factorization.

49747889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The square root of 49747889 is about 7053.2183434231. The cubic root of 49747889 is about 367.7829163316.

The spelling of 49747889 in words is "forty-nine million, seven hundred forty-seven thousand, eight hundred eighty-nine".