49939207 has 2 divisors, whose sum is σ = 49939208. Its totient is φ = 49939206.

The previous prime is 49939181. The next prime is 49939231. The reversal of 49939207 is 70293994.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49939207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49939507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24969603 + 24969604.

It is an arithmetic number, because the mean of its divisors is an integer number (24969604).

Almost surely, 2^49939207 is an apocalyptic number.

49939207 is a deficient number, since it is larger than the sum of its proper divisors (1).

49939207 is an equidigital number, since it uses as much as digits as its factorization.

49939207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 49939207 is about 7066.7677901570. The cubic root of 49939207 is about 368.2537804256.

The spelling of 49939207 in words is "forty-nine million, nine hundred thirty-nine thousand, two hundred seven".