5999638 has 4 divisors (see below), whose sum is σ = 8999460. Its totient is φ = 2999818.

The previous prime is 5999633. The next prime is 5999639. The reversal of 5999638 is 8369995.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×5999638² = 71991312262088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 5999591 and 5999600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5999633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1499908 + ... + 1499911.

It is an arithmetic number, because the mean of its divisors is an integer number (2249865).

Almost surely, 2^5999638 is an apocalyptic number.

5999638 is a deficient number, since it is larger than the sum of its proper divisors (2999822).

5999638 is a wasteful number, since it uses less digits than its factorization.

5999638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999821.

The product of its digits is 524880, while the sum is 49.

The square root of 5999638 is about 2449.4158487280. The cubic root of 5999638 is about 181.7084047783.

The spelling of 5999638 in words is "five million, nine hundred ninety-nine thousand, six hundred thirty-eight".