39404903 has 2 divisors, whose sum is σ = 39404904. Its totient is φ = 39404902.

The previous prime is 39404891. The next prime is 39404909. The reversal of 39404903 is 30940493.

39404903 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 is a cyclic number.

It is not a de Polignac number, because 39404903 - 2⁴ = 39404887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39404903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39404909) 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, 19702451 + 19702452.

It is an arithmetic number, because the mean of its divisors is an integer number (19702452).

Almost surely, 2^39404903 is an apocalyptic number.

39404903 is a deficient number, since it is larger than the sum of its proper divisors (1).

39404903 is an equidigital number, since it uses as much as digits as its factorization.

39404903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 39404903 is about 6277.3324748654. The cubic root of 39404903 is about 340.2907058113.

It can be divided in two parts, 3940490 and 3, that added together give a palindrome (3940493).

The spelling of 39404903 in words is "thirty-nine million, four hundred four thousand, nine hundred three".