38891774 has 4 divisors (see below), whose sum is σ = 58337664. Its totient is φ = 19445886.

The previous prime is 38891759. The next prime is 38891777. The reversal of 38891774 is 47719883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47719883 = 4271 ⋅11173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38891777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9722942 + ... + 9722945.

It is an arithmetic number, because the mean of its divisors is an integer number (14584416).

Almost surely, 2^38891774 is an apocalyptic number.

38891774 is a deficient number, since it is larger than the sum of its proper divisors (19445890).

38891774 is a wasteful number, since it uses less digits than its factorization.

38891774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19445889.

The product of its digits is 338688, while the sum is 47.

The square root of 38891774 is about 6236.3269638466. The cubic root of 38891774 is about 338.8071637304.

The spelling of 38891774 in words is "thirty-eight million, eight hundred ninety-one thousand, seven hundred seventy-four".