49431973 has 2 divisors, whose sum is σ = 49431974. Its totient is φ = 49431972.

The previous prime is 49431953. The next prime is 49431989. The reversal of 49431973 is 37913494.

It is a happy number.

49431973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32638369 + 16793604 = 5713^2 + 4098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49431973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49431923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24715986 + 24715987.

It is an arithmetic number, because the mean of its divisors is an integer number (24715987).

Almost surely, 2^49431973 is an apocalyptic number.

It is an amenable number.

49431973 is a deficient number, since it is larger than the sum of its proper divisors (1).

49431973 is an equidigital number, since it uses as much as digits as its factorization.

49431973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 49431973 is about 7030.7875092339. The cubic root of 49431973 is about 367.0027470486.

The spelling of 49431973 in words is "forty-nine million, four hundred thirty-one thousand, nine hundred seventy-three".