3901439 has 2 divisors, whose sum is σ = 3901440. Its totient is φ = 3901438.

The previous prime is 3901427. The next prime is 3901453. The reversal of 3901439 is 9341093.

It is a weak prime.

It is an emirp because it is prime and its reverse (9341093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3901439 - 2¹⁶ = 3835903 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3900439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1950719 + 1950720.

It is an arithmetic number, because the mean of its divisors is an integer number (1950720).

Almost surely, 2^3901439 is an apocalyptic number.

3901439 is a deficient number, since it is larger than the sum of its proper divisors (1).

3901439 is an equidigital number, since it uses as much as digits as its factorization.

3901439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 3901439 is about 1975.2060651993. The cubic root of 3901439 is about 157.4254488865.

The spelling of 3901439 in words is "three million, nine hundred one thousand, four hundred thirty-nine".