4394072668 has 24 divisors (see below), whose sum is σ = 7782037200. Its totient is φ = 2170791168.

The previous prime is 4394072659. The next prime is 4394072681. The reversal of 4394072668 is 8662704934.

It is a super-2 number, since 2×4394072668² = 38615749223329276448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92868 + ... + 131956.

It is an arithmetic number, because the mean of its divisors is an integer number (324251550).

Almost surely, 2^4394072668 is an apocalyptic number.

It is an amenable number.

4394072668 is a deficient number, since it is larger than the sum of its proper divisors (3387964532).

4394072668 is a wasteful number, since it uses less digits than its factorization.

4394072668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39429 (or 39427 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The square root of 4394072668 is about 66287.8018039518. The cubic root of 4394072668 is about 1637.9063939992.

The spelling of 4394072668 in words is "four billion, three hundred ninety-four million, seventy-two thousand, six hundred sixty-eight".