3940889 has 8 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 3547456.

The previous prime is 3940841. The next prime is 3940891. The reversal of 3940889 is 9880493.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3940889 is a prime.

It is a super-2 number, since 2×3940889² = 31061212220642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3940289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4649 + ... + 5430.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^3940889 is an apocalyptic number.

It is an amenable number.

3940889 is a deficient number, since it is larger than the sum of its proper divisors (413671).

3940889 is a wasteful number, since it uses less digits than its factorization.

3940889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10119.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 3940889 is about 1985.1672473623. The cubic root of 3940889 is about 157.9542809556.

The spelling of 3940889 in words is "three million, nine hundred forty thousand, eight hundred eighty-nine".