4057940 has 24 divisors (see below), whose sum is σ = 8589672. Its totient is φ = 1610240.

The previous prime is 4057939. The next prime is 4057967. The reversal of 4057940 is 497504.

It can be written as a sum of positive squares in 4 ways, for example, as 425104 + 3632836 = 652^2 + 1906^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2000 + ... + 3480.

It is an arithmetic number, because the mean of its divisors is an integer number (357903).

Almost surely, 2^4057940 is an apocalyptic number.

It is an amenable number.

4057940 is an abundant number, since it is smaller than the sum of its proper divisors (4531732).

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

4057940 is a wasteful number, since it uses less digits than its factorization.

4057940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1625 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 4057940 is about 2014.4329226857. The cubic root of 4057940 is about 159.5028841569.

The spelling of 4057940 in words is "four million, fifty-seven thousand, nine hundred forty".