3994217038 has 32 divisors (see below), whose sum is σ = 7183157760. Its totient is φ = 1629489120.

The previous prime is 3994217033. The next prime is 3994217047. The reversal of 3994217038 is 8307124993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994217033) 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 in 15 ways as a sum of consecutive naturals, for example, 40456 + ... + 98107.

It is an arithmetic number, because the mean of its divisors is an integer number (224473680).

Almost surely, 2^3994217038 is an apocalyptic number.

3994217038 is a deficient number, since it is larger than the sum of its proper divisors (3188940722).

3994217038 is a wasteful number, since it uses less digits than its factorization.

3994217038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138672.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 3994217038 is about 63199.8183383465. The cubic root of 3994217038 is about 1586.6356930159.

The spelling of 3994217038 in words is "three billion, nine hundred ninety-four million, two hundred seventeen thousand, thirty-eight".