3944313 has 12 divisors (see below), whose sum is σ = 5805540. Its totient is φ = 2579616.

The previous prime is 3944309. The next prime is 3944329. The reversal of 3944313 is 3134493.

It is a Cunningham number, because it is equal to 158³+1.

It can be written as a sum of positive squares in 2 ways, for example, as 3283344 + 660969 = 1812^2 + 813^2 .

It is not a de Polignac number, because 3944313 - 2² = 3944309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3944513) 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, 3658 + ... + 4611.

It is an arithmetic number, because the mean of its divisors is an integer number (483795).

Almost surely, 2^3944313 is an apocalyptic number.

It is an amenable number.

3944313 is a deficient number, since it is larger than the sum of its proper divisors (1861227).

3944313 is a wasteful number, since it uses less digits than its factorization.

3944313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8328 (or 8325 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 3944313 is about 1986.0294559749. The cubic root of 3944313 is about 158.0000133526. Note that the first 4 decimals are identical.

The spelling of 3944313 in words is "three million, nine hundred forty-four thousand, three hundred thirteen".