38139605 has 8 divisors (see below), whose sum is σ = 52305792. Its totient is φ = 26152848.

The previous prime is 38139601. The next prime is 38139613. The reversal of 38139605 is 50693183.

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 38139605 - 2² = 38139601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 1089703 = 38139605 / (3 + 8 + 1 + 3 + 9 + 6 + 0 + 5).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38139601) 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, 544817 + ... + 544886.

It is an arithmetic number, because the mean of its divisors is an integer number (6538224).

Almost surely, 2^38139605 is an apocalyptic number.

38139605 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38139605 is a deficient number, since it is larger than the sum of its proper divisors (14166187).

38139605 is a wasteful number, since it uses less digits than its factorization.

38139605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089715.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 38139605 is about 6175.7270827005. The cubic root of 38139605 is about 336.6087468029.

The spelling of 38139605 in words is "thirty-eight million, one hundred thirty-nine thousand, six hundred five".