4000955 has 16 divisors (see below), whose sum is σ = 5560320. Its totient is φ = 2706912.

The previous prime is 4000951. The next prime is 4000957. The reversal of 4000955 is 5590004.

It is a cyclic number.

It is not a de Polignac number, because 4000955 - 2² = 4000951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4000955.

It is not an unprimeable number, because it can be changed into a prime (4000951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2042 + ... + 3488.

It is an arithmetic number, because the mean of its divisors is an integer number (347520).

Almost surely, 2^4000955 is an apocalyptic number.

4000955 is a deficient number, since it is larger than the sum of its proper divisors (1559365).

4000955 is a wasteful number, since it uses less digits than its factorization.

4000955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 4000955 is about 2000.2387357513. The cubic root of 4000955 is about 158.7527372583.

Adding to 4000955 its reverse (5590004), we get a palindrome (9590959).

The spelling of 4000955 in words is "four million, nine hundred fifty-five", and thus it is an aban number.