3990078706 has 8 divisors (see below), whose sum is σ = 5985733104. Its totient is φ = 1994834340.

The previous prime is 3990078691. The next prime is 3990078707. The reversal of 3990078706 is 6078700993.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3990078706.

It is not an unprimeable number, because it can be changed into a prime (3990078707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76900 + ... + 117871.

It is an arithmetic number, because the mean of its divisors is an integer number (748216638).

Almost surely, 2^3990078706 is an apocalyptic number.

3990078706 is a deficient number, since it is larger than the sum of its proper divisors (1995654398).

3990078706 is a wasteful number, since it uses less digits than its factorization.

3990078706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205016.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 3990078706 is about 63167.0697911499. The cubic root of 3990078706 is about 1586.0875426819.

The spelling of 3990078706 in words is "three billion, nine hundred ninety million, seventy-eight thousand, seven hundred six".