3938394669 has 8 divisors (see below), whose sum is σ = 5728574112. Its totient is φ = 2386905840.

The previous prime is 3938394661. The next prime is 3938394683. The reversal of 3938394669 is 9664938393.

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

It is not a de Polignac number, because 3938394669 - 2³ = 3938394661 is a prime.

It is a super-2 number, since 2×3938394669² = 31021905137615239122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938394661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59672614 + ... + 59672679.

It is an arithmetic number, because the mean of its divisors is an integer number (716071764).

Almost surely, 2^3938394669 is an apocalyptic number.

It is an amenable number.

3938394669 is a deficient number, since it is larger than the sum of its proper divisors (1790179443).

3938394669 is a wasteful number, since it uses less digits than its factorization.

3938394669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119345307.

The product of its digits is 22674816, while the sum is 60.

The square root of 3938394669 is about 62756.6304783805. The cubic root of 3938394669 is about 1579.2094893225.

The spelling of 3938394669 in words is "three billion, nine hundred thirty-eight million, three hundred ninety-four thousand, six hundred sixty-nine".