4043655 has 64 divisors (see below), whose sum is σ = 8985600. Its totient is φ = 1676160.

The previous prime is 4043623. The next prime is 4043657. The reversal of 4043655 is 5563404.

4043655 is a `hidden beast` number, since 4 + 0 + 4 + 3 + 655 = 666.

It is not a de Polignac number, because 4043655 - 2⁵ = 4043623 is a prime.

It is a super-2 number, since 2×4043655² = 32702291518050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4043657) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10201 + ... + 10589.

It is an arithmetic number, because the mean of its divisors is an integer number (140400).

Almost surely, 2^4043655 is an apocalyptic number.

4043655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4043655 is an abundant number, since it is smaller than the sum of its proper divisors (4941945).

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

4043655 is a wasteful number, since it uses less digits than its factorization.

4043655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 4043655 is about 2010.8841339073. The cubic root of 4043655 is about 159.3155002810.

The spelling of 4043655 in words is "four million, forty-three thousand, six hundred fifty-five".