3954861 has 6 divisors (see below), whose sum is σ = 5712590. Its totient is φ = 2636568.

The previous prime is 3954859. The next prime is 3954871. The reversal of 3954861 is 1684593.

It can be written as a sum of positive squares in only one way, i.e., 3861225 + 93636 = 1965^2 + 306^2 .

It is not a de Polignac number, because 3954861 - 2¹ = 3954859 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 (3954851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219706 + ... + 219723.

Almost surely, 2^3954861 is an apocalyptic number.

It is an amenable number.

3954861 is a deficient number, since it is larger than the sum of its proper divisors (1757729).

3954861 is a wasteful number, since it uses less digits than its factorization.

3954861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439435 (or 439432 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 3954861 is about 1988.6832326944. The cubic root of 3954861 is about 158.1407307799.

The spelling of 3954861 in words is "three million, nine hundred fifty-four thousand, eight hundred sixty-one".