3940830 has 24 divisors (see below), whose sum is σ = 10246392. Its totient is φ = 1050864.

The previous prime is 3940823. The next prime is 3940837. The reversal of 3940830 is 380493.

It is an interprime number because it is at equal distance from previous prime (3940823) and next prime (3940837).

It is a junction number, because it is equal to n+sod(n) for n = 3940794 and 3940803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21804 + ... + 21983.

It is an arithmetic number, because the mean of its divisors is an integer number (426933).

Almost surely, 2^3940830 is an apocalyptic number.

3940830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3940830 is an abundant number, since it is smaller than the sum of its proper divisors (6305562).

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

3940830 is a wasteful number, since it uses less digits than its factorization.

3940830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43800 (or 43797 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3940830 is about 1985.1523870978. The cubic root of 3940830 is about 157.9534926944.

The spelling of 3940830 in words is "three million, nine hundred forty thousand, eight hundred thirty".