4457940 has 48 divisors (see below), whose sum is σ = 12579840. Its totient is φ = 1179520.

The previous prime is 4457933. The next prime is 4457953. The reversal of 4457940 is 497544.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11266 + ... + 11654.

It is an arithmetic number, because the mean of its divisors is an integer number (262080).

Almost surely, 2^4457940 is an apocalyptic number.

It is an amenable number.

4457940 is an abundant number, since it is smaller than the sum of its proper divisors (8121900).

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

4457940 is a wasteful number, since it uses less digits than its factorization.

4457940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 4457940 is about 2111.3834327284. The cubic root of 4457940 is about 164.5803846434.

It can be divided in two parts, 445 and 7940, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 4457940 in words is "four million, four hundred fifty-seven thousand, nine hundred forty".