3919398688 has 24 divisors (see below), whose sum is σ = 8170218252. Its totient is φ = 1844422656.

The previous prime is 3919398683. The next prime is 3919398713. The reversal of 3919398688 is 8868939193.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3661218064 + 258180624 = 60508^2 + 16068^2 .

It is a super-2 number, since 2×3919398688² = 30723372150992242688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3919398683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3601845 + ... + 3602932.

Almost surely, 2^3919398688 is an apocalyptic number.

It is an amenable number.

3919398688 is an abundant number, since it is smaller than the sum of its proper divisors (4250819564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3919398688 is a wasteful number, since it uses less digits than its factorization.

3919398688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7204804 (or 7204796 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 64.

The square root of 3919398688 is about 62605.1011340130. The cubic root of 3919398688 is about 1576.6664063120. Note that the first 3 decimals are identical.

The spelling of 3919398688 in words is "three billion, nine hundred nineteen million, three hundred ninety-eight thousand, six hundred eighty-eight".