3998138350 has 12 divisors (see below), whose sum is σ = 7436537424. Its totient is φ = 1599255320.

The previous prime is 3998138317. The next prime is 3998138371. The reversal of 3998138350 is 538318993.

It is a super-2 number, since 2×3998138350² = 31970220531481445000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3998138294 and 3998138303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39981334 + ... + 39981433.

It is an arithmetic number, because the mean of its divisors is an integer number (619711452).

Almost surely, 2^3998138350 is an apocalyptic number.

3998138350 is a deficient number, since it is larger than the sum of its proper divisors (3438399074).

3998138350 is a wasteful number, since it uses less digits than its factorization.

3998138350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79962779 (or 79962774 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 3998138350 is about 63230.8338550110. The cubic root of 3998138350 is about 1587.1547483226.

The spelling of 3998138350 in words is "three billion, nine hundred ninety-eight million, one hundred thirty-eight thousand, three hundred fifty".