49198769 has 2 divisors, whose sum is σ = 49198770. Its totient is φ = 49198768.

The previous prime is 49198763. The next prime is 49198777. The reversal of 49198769 is 96789194.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49168144 + 30625 = 7012^2 + 175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49198769 is a prime.

It is a super-2 number, since 2×49198769² = 4841037742230722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 49198769.

It is not a weakly prime, because it can be changed into another prime (49198763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24599384 + 24599385.

It is an arithmetic number, because the mean of its divisors is an integer number (24599385).

Almost surely, 2^49198769 is an apocalyptic number.

It is an amenable number.

49198769 is a deficient number, since it is larger than the sum of its proper divisors (1).

49198769 is an equidigital number, since it uses as much as digits as its factorization.

49198769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 49198769 is about 7014.1834164784. The cubic root of 49198769 is about 366.4247038169.

The spelling of 49198769 in words is "forty-nine million, one hundred ninety-eight thousand, seven hundred sixty-nine".