49339921 has 2 divisors, whose sum is σ = 49339922. Its totient is φ = 49339920.

The previous prime is 49339891. The next prime is 49339943. The reversal of 49339921 is 12993394.

49339921 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., 41990400 + 7349521 = 6480^2 + 2711^2 .

It is a cyclic number.

It is not a de Polignac number, because 49339921 - 2⁷ = 49339793 is a prime.

It is not a weakly prime, because it can be changed into another prime (49339421) 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, 24669960 + 24669961.

It is an arithmetic number, because the mean of its divisors is an integer number (24669961).

Almost surely, 2^49339921 is an apocalyptic number.

It is an amenable number.

49339921 is a deficient number, since it is larger than the sum of its proper divisors (1).

49339921 is an equidigital number, since it uses as much as digits as its factorization.

49339921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 40.

The square root of 49339921 is about 7024.2381081509. The cubic root of 49339921 is about 366.7747951993.

The spelling of 49339921 in words is "forty-nine million, three hundred thirty-nine thousand, nine hundred twenty-one".