3989425 has 24 divisors (see below), whose sum is σ = 5490720. Its totient is φ = 2851200.

The previous prime is 3989413. The next prime is 3989429. The reversal of 3989425 is 5249893.

It is a happy number.

It is not a de Polignac number, because 3989425 - 2⁵ = 3989393 is a prime.

3989425 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3989429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24394 + ... + 24556.

It is an arithmetic number, because the mean of its divisors is an integer number (228780).

Almost surely, 2^3989425 is an apocalyptic number.

It is an amenable number.

3989425 is a deficient number, since it is larger than the sum of its proper divisors (1501295).

3989425 is a wasteful number, since it uses less digits than its factorization.

3989425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 268 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 3989425 is about 1997.3545003329. The cubic root of 3989425 is about 158.6000920199.

The spelling of 3989425 in words is "three million, nine hundred eighty-nine thousand, four hundred twenty-five".