3972786 has 16 divisors (see below), whose sum is σ = 8364000. Its totient is φ = 1254528.

The previous prime is 3972757. The next prime is 3972791. The reversal of 3972786 is 6872793.

It is a d-powerful number, because it can be written as 3¹¹ + 9 + 7 + 2¹¹ + 7⁵ + 8⁷ + 6⁸ .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17311 + ... + 17538.

It is an arithmetic number, because the mean of its divisors is an integer number (522750).

Almost surely, 2^3972786 is an apocalyptic number.

3972786 is an abundant number, since it is smaller than the sum of its proper divisors (4391214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3972786 is a wasteful number, since it uses less digits than its factorization.

3972786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34873.

The product of its digits is 127008, while the sum is 42.

The square root of 3972786 is about 1993.1848885640. The cubic root of 3972786 is about 158.3792895839.

The spelling of 3972786 in words is "three million, nine hundred seventy-two thousand, seven hundred eighty-six".