38689743 has 4 divisors (see below), whose sum is σ = 51586328. Its totient is φ = 25793160.

The previous prime is 38689733. The next prime is 38689751. The reversal of 38689743 is 34798683.

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

It is not a de Polignac number, because 38689743 - 2⁴ = 38689727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38689692 and 38689701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38689733) 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, 6448288 + ... + 6448293.

It is an arithmetic number, because the mean of its divisors is an integer number (12896582).

Almost surely, 2^38689743 is an apocalyptic number.

38689743 is a deficient number, since it is larger than the sum of its proper divisors (12896585).

38689743 is a wasteful number, since it uses less digits than its factorization.

38689743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12896584.

The product of its digits is 870912, while the sum is 48.

The square root of 38689743 is about 6220.1079572625. The cubic root of 38689743 is about 338.2194780307.

The spelling of 38689743 in words is "thirty-eight million, six hundred eighty-nine thousand, seven hundred forty-three".