3944691 has 12 divisors (see below), whose sum is σ = 5830968. Its totient is φ = 2568384.

The previous prime is 3944683. The next prime is 3944711. The reversal of 3944691 is 1964493.

It is not a de Polignac number, because 3944691 - 2³ = 3944683 is a prime.

It is an Ulam number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3944621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4710 + ... + 5483.

It is an arithmetic number, because the mean of its divisors is an integer number (485914).

Almost surely, 2^3944691 is an apocalyptic number.

3944691 is a deficient number, since it is larger than the sum of its proper divisors (1886277).

3944691 is a wasteful number, since it uses less digits than its factorization.

3944691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10242 (or 10239 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3944691 is about 1986.1246184467. The cubic root of 3944691 is about 158.0050604585.

The spelling of 3944691 in words is "three million, nine hundred forty-four thousand, six hundred ninety-one".