4012905 has 24 divisors (see below), whose sum is σ = 6956928. Its totient is φ = 1974336.

The previous prime is 4012873. The next prime is 4012927. The reversal of 4012905 is 5092104.

It is not a de Polignac number, because 4012905 - 2⁵ = 4012873 is a prime.

It is a super-2 number, since 2×4012905² = 32206813078050, which contains 22 as substring.

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, 1744 + ... + 3326.

It is an arithmetic number, because the mean of its divisors is an integer number (289872).

Almost surely, 2^4012905 is an apocalyptic number.

It is an amenable number.

4012905 is a deficient number, since it is larger than the sum of its proper divisors (2944023).

4012905 is a wasteful number, since it uses less digits than its factorization.

4012905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617 (or 1604 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 4012905 is about 2003.2236520169. The cubic root of 4012905 is about 158.9106336937.

The spelling of 4012905 in words is "four million, twelve thousand, nine hundred five".