4000755 has 16 divisors (see below), whose sum is σ = 6983424. Its totient is φ = 1939680.

The previous prime is 4000751. The next prime is 4000813. The reversal of 4000755 is 5570004.

It is not a de Polignac number, because 4000755 - 2² = 4000751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4000751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11959 + ... + 12288.

It is an arithmetic number, because the mean of its divisors is an integer number (436464).

Almost surely, 2^4000755 is an apocalyptic number.

4000755 is a deficient number, since it is larger than the sum of its proper divisors (2982669).

4000755 is a wasteful number, since it uses less digits than its factorization.

4000755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24266.

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 4000755 is about 2000.1887410942. The cubic root of 4000755 is about 158.7500919668.

Adding to 4000755 its reverse (5570004), we get a palindrome (9570759).

The spelling of 4000755 in words is "four million, seven hundred fifty-five", and thus it is an aban number.