49990117 has 2 divisors, whose sum is σ = 49990118. Its totient is φ = 49990116.

The previous prime is 49990103. The next prime is 49990139. The reversal of 49990117 is 71109994.

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., 48804196 + 1185921 = 6986^2 + 1089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49990117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49990117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49990147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24995058 + 24995059.

It is an arithmetic number, because the mean of its divisors is an integer number (24995059).

Almost surely, 2^49990117 is an apocalyptic number.

It is an amenable number.

49990117 is a deficient number, since it is larger than the sum of its proper divisors (1).

49990117 is an equidigital number, since it uses as much as digits as its factorization.

49990117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 49990117 is about 7070.3689436974. The cubic root of 49990117 is about 368.3788754091.

The spelling of 49990117 in words is "forty-nine million, nine hundred ninety thousand, one hundred seventeen".