3993955906 has 8 divisors (see below), whose sum is σ = 5995607184. Its totient is φ = 1995420180.

The previous prime is 3993955883. The next prime is 3993955939. The reversal of 3993955906 is 6095593993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 775680 + ... + 780811.

It is an arithmetic number, because the mean of its divisors is an integer number (749450898).

Almost surely, 2^3993955906 is an apocalyptic number.

3993955906 is a deficient number, since it is larger than the sum of its proper divisors (2001651278).

3993955906 is a wasteful number, since it uses less digits than its factorization.

3993955906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557776.

The product of its (nonzero) digits is 8857350, while the sum is 58.

The square root of 3993955906 is about 63197.7523809194. The cubic root of 3993955906 is about 1586.6011154941.

The spelling of 3993955906 in words is "three billion, nine hundred ninety-three million, nine hundred fifty-five thousand, nine hundred six".