49999637 has 2 divisors, whose sum is σ = 49999638. Its totient is φ = 49999636.

The previous prime is 49999627. The next prime is 49999639. The reversal of 49999637 is 73699994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34586161 + 15413476 = 5881^2 + 3926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49999637 is a prime.

Together with 49999639, 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 (49999639) 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, 24999818 + 24999819.

It is an arithmetic number, because the mean of its divisors is an integer number (24999819).

Almost surely, 2^49999637 is an apocalyptic number.

It is an amenable number.

49999637 is a deficient number, since it is larger than the sum of its proper divisors (1).

49999637 is an equidigital number, since it uses as much as digits as its factorization.

49999637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3306744, while the sum is 56.

The square root of 49999637 is about 7071.0421438427. The cubic root of 49999637 is about 368.4022583263.

The spelling of 49999637 in words is "forty-nine million, nine hundred ninety-nine thousand, six hundred thirty-seven".