3809940 has 24 divisors (see below), whose sum is σ = 10668000. Its totient is φ = 1015968.

The previous prime is 3809917. The next prime is 3809941. The reversal of 3809940 is 499083.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3809941) 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, 31690 + ... + 31809.

It is an arithmetic number, because the mean of its divisors is an integer number (444500).

Almost surely, 2^3809940 is an apocalyptic number.

3809940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3809940 is an abundant number, since it is smaller than the sum of its proper divisors (6858060).

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

3809940 is a wasteful number, since it uses less digits than its factorization.

3809940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63511 (or 63509 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 3809940 is about 1951.9067600682. The cubic root of 3809940 is about 156.1850204474.

The spelling of 3809940 in words is "three million, eight hundred nine thousand, nine hundred forty".