38634427 has 4 divisors (see below), whose sum is σ = 41606320. Its totient is φ = 35662536.

The previous prime is 38634413. The next prime is 38634451. The reversal of 38634427 is 72443683.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-38634427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38632427) 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, 1485927 + ... + 1485952.

It is an arithmetic number, because the mean of its divisors is an integer number (10401580).

Almost surely, 2^38634427 is an apocalyptic number.

38634427 is a deficient number, since it is larger than the sum of its proper divisors (2971893).

38634427 is a wasteful number, since it uses less digits than its factorization.

38634427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971892.

The product of its digits is 96768, while the sum is 37.

The square root of 38634427 is about 6215.6598201639. The cubic root of 38634427 is about 338.0582133083.

The spelling of 38634427 in words is "thirty-eight million, six hundred thirty-four thousand, four hundred twenty-seven".