3942830 has 16 divisors (see below), whose sum is σ = 7248960. Its totient is φ = 1543392.

The previous prime is 3942781. The next prime is 3942839. The reversal of 3942830 is 382493.

It is a junction number, because it is equal to n+sod(n) for n = 3942793 and 3942802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942839) 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, 3725 + ... + 4664.

It is an arithmetic number, because the mean of its divisors is an integer number (453060).

Almost surely, 2^3942830 is an apocalyptic number.

3942830 is a deficient number, since it is larger than the sum of its proper divisors (3306130).

3942830 is a wasteful number, since it uses less digits than its factorization.

3942830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 3942830 is about 1985.6560628669. The cubic root of 3942830 is about 157.9802090257.

The spelling of 3942830 in words is "three million, nine hundred forty-two thousand, eight hundred thirty".