3989420 has 24 divisors (see below), whose sum is σ = 8439648. Its totient is φ = 1584000.

The previous prime is 3989413. The next prime is 3989429. The reversal of 3989420 is 249893.

It is an Ulam 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 7 ways as a sum of consecutive naturals, for example, 2360 + ... + 3680.

It is an arithmetic number, because the mean of its divisors is an integer number (351652).

Almost surely, 2^3989420 is an apocalyptic number.

It is an amenable number.

3989420 is an abundant number, since it is smaller than the sum of its proper divisors (4450228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3989420 is a wasteful number, since it uses less digits than its factorization.

3989420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 3989420 is about 1997.3532486769. The cubic root of 3989420 is about 158.6000257613.

The spelling of 3989420 in words is "three million, nine hundred eighty-nine thousand, four hundred twenty".