49071391 has 2 divisors, whose sum is σ = 49071392. Its totient is φ = 49071390.

The previous prime is 49071371. The next prime is 49071409. The reversal of 49071391 is 19317094.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49071391 - 2⁵ = 49071359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49071331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24535695 + 24535696.

It is an arithmetic number, because the mean of its divisors is an integer number (24535696).

Almost surely, 2^49071391 is an apocalyptic number.

49071391 is a deficient number, since it is larger than the sum of its proper divisors (1).

49071391 is an equidigital number, since it uses as much as digits as its factorization.

49071391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 49071391 is about 7005.0975011059. The cubic root of 49071391 is about 366.1082000661.

The spelling of 49071391 in words is "forty-nine million, seventy-one thousand, three hundred ninety-one".