3938064789 has 8 divisors (see below), whose sum is σ = 5322681472. Its totient is φ = 2589412320.

The previous prime is 3938064769. The next prime is 3938064821. The reversal of 3938064789 is 9874608393.

It is a happy number.

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

It is not a de Polignac number, because 3938064789 - 2⁷ = 3938064661 is a prime.

It is a super-2 number, since 2×3938064789² = 31016708564723229042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938064769) 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 7 ways as a sum of consecutive naturals, for example, 8990797 + ... + 8991234.

It is an arithmetic number, because the mean of its divisors is an integer number (665335184).

Almost surely, 2^3938064789 is an apocalyptic number.

It is an amenable number.

3938064789 is a deficient number, since it is larger than the sum of its proper divisors (1384616683).

3938064789 is a wasteful number, since it uses less digits than its factorization.

3938064789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17982107.

The product of its (nonzero) digits is 7838208, while the sum is 57.

The square root of 3938064789 is about 62754.0021751601. The cubic root of 3938064789 is about 1579.1653965541.

The spelling of 3938064789 in words is "three billion, nine hundred thirty-eight million, sixty-four thousand, seven hundred eighty-nine".