3900389 has 8 divisors (see below), whose sum is σ = 4113408. Its totient is φ = 3692880.

The previous prime is 3900367. The next prime is 3900397. The reversal of 3900389 is 9830093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3900389 - 2²⁰ = 2851813 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3900329) 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 in 7 ways as a sum of consecutive naturals, for example, 119 + ... + 2795.

It is an arithmetic number, because the mean of its divisors is an integer number (514176).

Almost surely, 2^3900389 is an apocalyptic number.

It is an amenable number.

3900389 is a deficient number, since it is larger than the sum of its proper divisors (213019).

3900389 is a wasteful number, since it uses less digits than its factorization.

3900389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3900389 is about 1974.9402522608. The cubic root of 3900389 is about 157.4113249054.

The spelling of 3900389 in words is "three million, nine hundred thousand, three hundred eighty-nine".