3909740 has 24 divisors (see below), whose sum is σ = 8255520. Its totient is φ = 1555328.

The previous prime is 3909739. The next prime is 3909749. The reversal of 3909740 is 479093.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3909697 and 3909706.

It is not an unprimeable number, because it can be changed into a prime (3909749) 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, 4241 + ... + 5079.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^3909740 is an apocalyptic number.

It is an amenable number.

3909740 is an abundant number, since it is smaller than the sum of its proper divisors (4345780).

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

3909740 is a wasteful number, since it uses less digits than its factorization.

3909740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 3909740 is about 1977.3062484097. The cubic root of 3909740 is about 157.5370199365.

The spelling of 3909740 in words is "three million, nine hundred nine thousand, seven hundred forty".