38749229 has 4 divisors (see below), whose sum is σ = 38828640. Its totient is φ = 38669820.

The previous prime is 38749219. The next prime is 38749237. The reversal of 38749229 is 92294783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38749229 - 2⁸ = 38748973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38749229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38749219) 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, 38969 + ... + 39950.

It is an arithmetic number, because the mean of its divisors is an integer number (9707160).

Almost surely, 2^38749229 is an apocalyptic number.

It is an amenable number.

38749229 is a deficient number, since it is larger than the sum of its proper divisors (79411).

38749229 is an equidigital number, since it uses as much as digits as its factorization.

38749229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79410.

The product of its digits is 217728, while the sum is 44.

The square root of 38749229 is about 6224.8878704761. The cubic root of 38749229 is about 338.3927282677.

The spelling of 38749229 in words is "thirty-eight million, seven hundred forty-nine thousand, two hundred twenty-nine".