3994357 has 2 divisors, whose sum is σ = 3994358. Its totient is φ = 3994356.

The previous prime is 3994279. The next prime is 3994369. The reversal of 3994357 is 7534993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3964081 + 30276 = 1991^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 3994357 - 2⁷ = 3994229 is a prime.

3994357 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3992357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997178 + 1997179.

It is an arithmetic number, because the mean of its divisors is an integer number (1997179).

Almost surely, 2^3994357 is an apocalyptic number.

It is an amenable number.

3994357 is a deficient number, since it is larger than the sum of its proper divisors (1).

3994357 is an equidigital number, since it uses as much as digits as its factorization.

3994357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 40.

The square root of 3994357 is about 1998.5887520948. The cubic root of 3994357 is about 158.6654225318.

It can be divided in two parts, 39943 and 57, that added together give a square (40000 = 200²).

The spelling of 3994357 in words is "three million, nine hundred ninety-four thousand, three hundred fifty-seven".