49641391 has 2 divisors, whose sum is σ = 49641392. Its totient is φ = 49641390.

The previous prime is 49641367. The next prime is 49641407. The reversal of 49641391 is 19314694.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49641391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49641391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49641311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24820695 + 24820696.

It is an arithmetic number, because the mean of its divisors is an integer number (24820696).

Almost surely, 2^49641391 is an apocalyptic number.

49641391 is a deficient number, since it is larger than the sum of its proper divisors (1).

49641391 is an equidigital number, since it uses as much as digits as its factorization.

49641391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 49641391 is about 7045.6646953996. The cubic root of 49641391 is about 367.5202845638.

The spelling of 49641391 in words is "forty-nine million, six hundred forty-one thousand, three hundred ninety-one".