4618440 has 48 divisors (see below), whose sum is σ = 15011100. Its totient is φ = 1231488.

The previous prime is 4618433. The next prime is 4618447. The reversal of 4618440 is 448164.

4618440 is a `hidden beast` number, since 4 + 618 + 4 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (4618433) and next prime (4618447).

It can be written as a sum of positive squares in 2 ways, for example, as 4588164 + 30276 = 2142^2 + 174^2 .

It is not an unprimeable number, because it can be changed into a prime (4618447) 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, 6055 + ... + 6774.

Almost surely, 2^4618440 is an apocalyptic number.

4618440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4618440 is an abundant number, since it is smaller than the sum of its proper divisors (10392660).

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

4618440 is a wasteful number, since it uses less digits than its factorization.

4618440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12846 (or 12839 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 4618440 is about 2149.0556065398. The cubic root of 4618440 is about 166.5322827861.

The spelling of 4618440 in words is "four million, six hundred eighteen thousand, four hundred forty".