4056861 has 16 divisors (see below), whose sum is σ = 5757440. Its totient is φ = 2533680.

The previous prime is 4056859. The next prime is 4056883. The reversal of 4056861 is 1686504.

It is not a de Polignac number, because 4056861 - 2¹ = 4056859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4056851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5526 + ... + 6216.

It is an arithmetic number, because the mean of its divisors is an integer number (359840).

Almost surely, 2^4056861 is an apocalyptic number.

It is an amenable number.

4056861 is a deficient number, since it is larger than the sum of its proper divisors (1700579).

4056861 is a wasteful number, since it uses less digits than its factorization.

4056861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 4056861 is about 2014.1650875735. The cubic root of 4056861 is about 159.4887457133.

The spelling of 4056861 in words is "four million, fifty-six thousand, eight hundred sixty-one".