38693879 has 6 divisors (see below), whose sum is σ = 45011304. Its totient is φ = 33166140.

The previous prime is 38693867. The next prime is 38693881. The reversal of 38693879 is 97839683.

It is a de Polignac number, because none of the positive numbers 2^k-38693879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38693879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38693839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 394787 + ... + 394884.

It is an arithmetic number, because the mean of its divisors is an integer number (7501884).

Almost surely, 2^38693879 is an apocalyptic number.

38693879 is a deficient number, since it is larger than the sum of its proper divisors (6317425).

38693879 is an equidigital number, since it uses as much as digits as its factorization.

38693879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789685 (or 789678 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The square root of 38693879 is about 6220.4404184913. The cubic root of 38693879 is about 338.2315296824.

The spelling of 38693879 in words is "thirty-eight million, six hundred ninety-three thousand, eight hundred seventy-nine".