4012786 has 4 divisors (see below), whose sum is σ = 6019182. Its totient is φ = 2006392.

The previous prime is 4012783. The next prime is 4012829. The reversal of 4012786 is 6872104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3980025 + 32761 = 1995^2 + 181^2 .

It is a super-2 number, since 2×4012786² = 32204902963592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4012783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003195 + ... + 1003198.

Almost surely, 2^4012786 is an apocalyptic number.

4012786 is a deficient number, since it is larger than the sum of its proper divisors (2006396).

4012786 is a wasteful number, since it uses less digits than its factorization.

4012786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006395.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 4012786 is about 2003.1939496714. The cubic root of 4012786 is about 158.9090628822.

The spelling of 4012786 in words is "four million, twelve thousand, seven hundred eighty-six".