4253940 has 36 divisors (see below), whose sum is σ = 12904164. Its totient is φ = 1134336.

The previous prime is 4253917. The next prime is 4253941. The reversal of 4253940 is 493524.

It can be written as a sum of positive squares in 2 ways, for example, as 2842596 + 1411344 = 1686^2 + 1188^2 .

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

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4253941) 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, 11637 + ... + 11996.

It is an arithmetic number, because the mean of its divisors is an integer number (358449).

Almost surely, 2^4253940 is an apocalyptic number.

It is an amenable number.

4253940 is an abundant number, since it is smaller than the sum of its proper divisors (8650224).

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

4253940 is a wasteful number, since it uses less digits than its factorization.

4253940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23648 (or 23643 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 4253940 is about 2062.5081818020. The cubic root of 4253940 is about 162.0306297822.

The spelling of 4253940 in words is "four million, two hundred fifty-three thousand, nine hundred forty".