38139862 has 4 divisors (see below), whose sum is σ = 57209796. Its totient is φ = 19069930.

The previous prime is 38139847. The next prime is 38139869. The reversal of 38139862 is 26893183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26893183 = 523 ⋅51421.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38139869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9534964 + ... + 9534967.

It is an arithmetic number, because the mean of its divisors is an integer number (14302449).

Almost surely, 2^38139862 is an apocalyptic number.

38139862 is a deficient number, since it is larger than the sum of its proper divisors (19069934).

38139862 is a wasteful number, since it uses less digits than its factorization.

38139862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19069933.

The product of its digits is 62208, while the sum is 40.

The square root of 38139862 is about 6175.7478899320. The cubic root of 38139862 is about 336.6095028695.

The spelling of 38139862 in words is "thirty-eight million, one hundred thirty-nine thousand, eight hundred sixty-two".