38775139 has 8 divisors (see below), whose sum is σ = 42036512. Its totient is φ = 35553600.

The previous prime is 38775137. The next prime is 38775151. The reversal of 38775139 is 93157783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38775139 - 2¹ = 38775137 is a prime.

It is a super-2 number, since 2×38775139² = 3007022808938642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38775095 and 38775104.

It is not an unprimeable number, because it can be changed into a prime (38775137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7914 + ... + 11839.

It is an arithmetic number, because the mean of its divisors is an integer number (5254564).

Almost surely, 2^38775139 is an apocalyptic number.

38775139 is a deficient number, since it is larger than the sum of its proper divisors (3261373).

38775139 is a wasteful number, since it uses less digits than its factorization.

38775139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19917.

The product of its digits is 158760, while the sum is 43.

The square root of 38775139 is about 6226.9686846812. The cubic root of 38775139 is about 338.4681345173.

The spelling of 38775139 in words is "thirty-eight million, seven hundred seventy-five thousand, one hundred thirty-nine".