38938819 has 4 divisors (see below), whose sum is σ = 39076696. Its totient is φ = 38800944.

The previous prime is 38938817. The next prime is 38938831. The reversal of 38938819 is 91883983.

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

It is a cyclic number.

It is not a de Polignac number, because 38938819 - 2¹ = 38938817 is a prime.

It is a super-2 number, since 2×38938819² = 3032463250229522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38938813) 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, 68514 + ... + 69079.

It is an arithmetic number, because the mean of its divisors is an integer number (9769174).

Almost surely, 2^38938819 is an apocalyptic number.

38938819 is a deficient number, since it is larger than the sum of its proper divisors (137877).

38938819 is a wasteful number, since it uses less digits than its factorization.

38938819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137876.

The product of its digits is 373248, while the sum is 49.

The square root of 38938819 is about 6240.0976755176. The cubic root of 38938819 is about 338.9437201176.

The spelling of 38938819 in words is "thirty-eight million, nine hundred thirty-eight thousand, eight hundred nineteen".