3729389 has 2 divisors, whose sum is σ = 3729390. Its totient is φ = 3729388.

The previous prime is 3729379. The next prime is 3729391. The reversal of 3729389 is 9839273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3724900 + 4489 = 1930^2 + 67^2 .

It is an emirp because it is prime and its reverse (9839273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3729389 - 2⁴ = 3729373 is a prime.

Together with 3729391, it forms a pair of twin primes.

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 (3729329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864694 + 1864695.

It is an arithmetic number, because the mean of its divisors is an integer number (1864695).

Almost surely, 2^3729389 is an apocalyptic number.

It is an amenable number.

3729389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3729389 is an equidigital number, since it uses as much as digits as its factorization.

3729389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 3729389 is about 1931.1626032005. The cubic root of 3729389 is about 155.0764659130.

The spelling of 3729389 in words is "three million, seven hundred twenty-nine thousand, three hundred eighty-nine".