49705991 has 2 divisors, whose sum is σ = 49705992. Its totient is φ = 49705990.

The previous prime is 49705987. The next prime is 49705993. The reversal of 49705991 is 19950794.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49705991 - 2² = 49705987 is a prime.

Together with 49705993, 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 (49705993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24852995 + 24852996.

It is an arithmetic number, because the mean of its divisors is an integer number (24852996).

Almost surely, 2^49705991 is an apocalyptic number.

49705991 is a deficient number, since it is larger than the sum of its proper divisors (1).

49705991 is an equidigital number, since it uses as much as digits as its factorization.

49705991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 49705991 is about 7050.2475843051. The cubic root of 49705991 is about 367.6796376001.

The spelling of 49705991 in words is "forty-nine million, seven hundred five thousand, nine hundred ninety-one".