3939830 has 16 divisors (see below), whose sum is σ = 7115040. Its totient is φ = 1570752.

The previous prime is 3939829. The next prime is 3939839. The reversal of 3939830 is 389393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939839) 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, 4466 + ... + 5274.

It is an arithmetic number, because the mean of its divisors is an integer number (444690).

Almost surely, 2^3939830 is an apocalyptic number.

3939830 is a deficient number, since it is larger than the sum of its proper divisors (3175210).

3939830 is a wasteful number, since it uses less digits than its factorization.

3939830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 3939830 is about 1984.9005012846. The cubic root of 3939830 is about 157.9401311390.

The spelling of 3939830 in words is "three million, nine hundred thirty-nine thousand, eight hundred thirty".