38739893 has 4 divisors (see below), whose sum is σ = 38765580. Its totient is φ = 38714208.

The previous prime is 38739887. The next prime is 38739919. The reversal of 38739893 is 39893783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37246609 + 1493284 = 6103^2 + 1222^2 .

It is a cyclic number.

It is not a de Polignac number, because 38739893 - 2⁶ = 38739829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38739823) 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, 10430 + ... + 13647.

It is an arithmetic number, because the mean of its divisors is an integer number (9691395).

Almost surely, 2^38739893 is an apocalyptic number.

It is an amenable number.

38739893 is a deficient number, since it is larger than the sum of its proper divisors (25687).

38739893 is a wasteful number, since it uses less digits than its factorization.

38739893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25686.

The product of its digits is 979776, while the sum is 50.

The square root of 38739893 is about 6224.1379322762. The cubic root of 38739893 is about 338.3655493332.

The spelling of 38739893 in words is "thirty-eight million, seven hundred thirty-nine thousand, eight hundred ninety-three".