49138169 has 2 divisors, whose sum is σ = 49138170. Its totient is φ = 49138168.

The previous prime is 49138147. The next prime is 49138223. The reversal of 49138169 is 96183194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37982569 + 11155600 = 6163^2 + 3340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49138169 is a prime.

It is a super-2 number, since 2×49138169² = 4829119305345122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49138129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24569084 + 24569085.

It is an arithmetic number, because the mean of its divisors is an integer number (24569085).

Almost surely, 2^49138169 is an apocalyptic number.

It is an amenable number.

49138169 is a deficient number, since it is larger than the sum of its proper divisors (1).

49138169 is an equidigital number, since it uses as much as digits as its factorization.

49138169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 49138169 is about 7009.8622668352. The cubic root of 49138169 is about 366.2741955772.

The spelling of 49138169 in words is "forty-nine million, one hundred thirty-eight thousand, one hundred sixty-nine".