38634749 has 8 divisors (see below), whose sum is σ = 39033312. Its totient is φ = 38238480.

The previous prime is 38634737. The next prime is 38634763. The reversal of 38634749 is 94743683.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38634749 - 2²⁴ = 21857533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38624749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68342 + ... + 68904.

It is an arithmetic number, because the mean of its divisors is an integer number (4879164).

Almost surely, 2^38634749 is an apocalyptic number.

It is an amenable number.

38634749 is a deficient number, since it is larger than the sum of its proper divisors (398563).

38634749 is a wasteful number, since it uses less digits than its factorization.

38634749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147.

The product of its digits is 435456, while the sum is 44.

The square root of 38634749 is about 6215.6857224284. The cubic root of 38634749 is about 338.0591524917.

The spelling of 38634749 in words is "thirty-eight million, six hundred thirty-four thousand, seven hundred forty-nine".