49998917 has 2 divisors, whose sum is σ = 49998918. Its totient is φ = 49998916.

The previous prime is 49998913. The next prime is 49998919. The reversal of 49998917 is 71989994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46430596 + 3568321 = 6814^2 + 1889^2 .

It is a cyclic number.

It is not a de Polignac number, because 49998917 - 2² = 49998913 is a prime.

Together with 49998919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49998911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24999458 + 24999459.

It is an arithmetic number, because the mean of its divisors is an integer number (24999459).

Almost surely, 2^49998917 is an apocalyptic number.

It is an amenable number.

49998917 is a deficient number, since it is larger than the sum of its proper divisors (1).

49998917 is an equidigital number, since it uses as much as digits as its factorization.

49998917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 56.

The square root of 49998917 is about 7070.9912317864. The cubic root of 49998917 is about 368.4004899741.

The spelling of 49998917 in words is "forty-nine million, nine hundred ninety-eight thousand, nine hundred seventeen".