38787793 has 4 divisors (see below), whose sum is σ = 42313968. Its totient is φ = 35261620.

The previous prime is 38787781. The next prime is 38787799. The reversal of 38787793 is 39778783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38787793 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 38787793.

It is not an unprimeable number, because it can be changed into a prime (38787799) 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, 1763071 + ... + 1763092.

It is an arithmetic number, because the mean of its divisors is an integer number (10578492).

Almost surely, 2^38787793 is an apocalyptic number.

It is an amenable number.

38787793 is a deficient number, since it is larger than the sum of its proper divisors (3526175).

38787793 is a wasteful number, since it uses less digits than its factorization.

38787793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526174.

The product of its digits is 1778112, while the sum is 52.

The square root of 38787793 is about 6227.9846660055. The cubic root of 38787793 is about 338.5049494290.

The spelling of 38787793 in words is "thirty-eight million, seven hundred eighty-seven thousand, seven hundred ninety-three".