3994573237 has 2 divisors, whose sum is σ = 3994573238. Its totient is φ = 3994573236.

The previous prime is 3994573223. The next prime is 3994573241. The reversal of 3994573237 is 7323754993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2852200836 + 1142372401 = 53406^2 + 33799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3994573237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3994573267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997286618 + 1997286619.

It is an arithmetic number, because the mean of its divisors is an integer number (1997286619).

Almost surely, 2^3994573237 is an apocalyptic number.

It is an amenable number.

3994573237 is a deficient number, since it is larger than the sum of its proper divisors (1).

3994573237 is an equidigital number, since it uses as much as digits as its factorization.

3994573237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4286520, while the sum is 52.

The square root of 3994573237 is about 63202.6363136855. The cubic root of 3994573237 is about 1586.6828563058.

The spelling of 3994573237 in words is "three billion, nine hundred ninety-four million, five hundred seventy-three thousand, two hundred thirty-seven".