3913389 has 6 divisors (see below), whose sum is σ = 5652686. Its totient is φ = 2608920.

The previous prime is 3913369. The next prime is 3913391. The reversal of 3913389 is 9833193.

It can be written as a sum of positive squares in only one way, i.e., 3802500 + 110889 = 1950^2 + 333^2 .

It is not a de Polignac number, because 3913389 - 2⁹ = 3912877 is a prime.

It is a super-2 number, since 2×3913389² = 30629226930642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3913309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217402 + ... + 217419.

Almost surely, 2^3913389 is an apocalyptic number.

It is an amenable number.

3913389 is a deficient number, since it is larger than the sum of its proper divisors (1739297).

3913389 is a wasteful number, since it uses less digits than its factorization.

3913389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434827 (or 434824 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 3913389 is about 1978.2287532032. The cubic root of 3913389 is about 157.5860149967.

The spelling of 3913389 in words is "three million, nine hundred thirteen thousand, three hundred eighty-nine".