38383839 has 12 divisors (see below), whose sum is σ = 59708376. Its totient is φ = 23620752.

The previous prime is 38383817. The next prime is 38383843. The reversal of 38383839 is 93838383.

It is not a de Polignac number, because 38383839 - 2¹² = 38379743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38383794 and 38383803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38383889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163917 + ... + 164150.

It is an arithmetic number, because the mean of its divisors is an integer number (4975698).

Almost surely, 2^38383839 is an apocalyptic number.

38383839 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

38383839 is a deficient number, since it is larger than the sum of its proper divisors (21324537).

38383839 is a wasteful number, since it uses less digits than its factorization.

38383839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328086 (or 328083 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 38383839 is about 6195.4692316240. The cubic root of 38383839 is about 337.3257306070.

The spelling of 38383839 in words is "thirty-eight million, three hundred eighty-three thousand, eight hundred thirty-nine".