3940740 has 36 divisors (see below), whose sum is σ = 11954124. Its totient is φ = 1050816.

The previous prime is 3940721. The next prime is 3940747. The reversal of 3940740 is 470493.

It can be written as a sum of positive squares in 2 ways, for example, as 2214144 + 1726596 = 1488^2 + 1314^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (3940747) 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, 10767 + ... + 11126.

It is an arithmetic number, because the mean of its divisors is an integer number (332059).

Almost surely, 2^3940740 is an apocalyptic number.

3940740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3940740 is an abundant number, since it is smaller than the sum of its proper divisors (8013384).

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

3940740 is a wasteful number, since it uses less digits than its factorization.

3940740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21908 (or 21903 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 3940740 is about 1985.1297186834. The cubic root of 3940740 is about 157.9522902470.

The spelling of 3940740 in words is "three million, nine hundred forty thousand, seven hundred forty".