38873987 has 4 divisors (see below), whose sum is σ = 38891160. Its totient is φ = 38856816.

The previous prime is 38873983. The next prime is 38873993. The reversal of 38873987 is 78937883.

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

It is a cyclic number.

It is not a de Polignac number, because 38873987 - 2² = 38873983 is a prime.

It is a super-2 number, since 2×38873987² = 3022373730552338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38873983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4562 + ... + 9927.

It is an arithmetic number, because the mean of its divisors is an integer number (9722790).

Almost surely, 2^38873987 is an apocalyptic number.

38873987 is a deficient number, since it is larger than the sum of its proper divisors (17173).

38873987 is a wasteful number, since it uses less digits than its factorization.

38873987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17172.

The product of its digits is 2032128, while the sum is 53.

The square root of 38873987 is about 6234.9007209418. The cubic root of 38873987 is about 338.7555051460.

The spelling of 38873987 in words is "thirty-eight million, eight hundred seventy-three thousand, nine hundred eighty-seven".