3964994693 has 16 divisors (see below), whose sum is σ = 4425585792. Its totient is φ = 3521880000.

The previous prime is 3964994659. The next prime is 3964994707.

It is a happy number.

3964994693 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 3964994693 - 2²⁴ = 3948217477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964994603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81755 + ... + 120887.

It is an arithmetic number, because the mean of its divisors is an integer number (276599112).

Almost surely, 2^3964994693 is an apocalyptic number.

It is an amenable number.

3964994693 is a deficient number, since it is larger than the sum of its proper divisors (460591099).

3964994693 is a wasteful number, since it uses less digits than its factorization.

3964994693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39356.

The product of its digits is 34012224, while the sum is 62.

The square root of 3964994693 is about 62968.2038254229. The cubic root of 3964994693 is about 1582.7568561175.

The spelling of 3964994693 in words is "three billion, nine hundred sixty-four million, nine hundred ninety-four thousand, six hundred ninety-three".