4012855 has 24 divisors (see below), whose sum is σ = 6114960. Its totient is φ = 2499840.

The previous prime is 4012847. The next prime is 4012861. The reversal of 4012855 is 5582104.

It is not a de Polignac number, because 4012855 - 2³ = 4012847 is a prime.

It is a super-2 number, since 2×4012855² = 32206010502050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1951 + ... + 3439.

It is an arithmetic number, because the mean of its divisors is an integer number (254790).

Almost surely, 2^4012855 is an apocalyptic number.

4012855 is a deficient number, since it is larger than the sum of its proper divisors (2102105).

4012855 is a wasteful number, since it uses less digits than its factorization.

4012855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 4012855 is about 2003.2111720934. The cubic root of 4012855 is about 158.9099736926.

Adding to 4012855 its reverse (5582104), we get a palindrome (9594959).

The spelling of 4012855 in words is "four million, twelve thousand, eight hundred fifty-five".