38405229 has 8 divisors (see below), whose sum is σ = 51280320. Its totient is φ = 25566816.

The previous prime is 38405203. The next prime is 38405243. The reversal of 38405229 is 92250483.

It is a happy number.

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

It is not a de Polignac number, because 38405229 - 2¹¹ = 38403181 is a prime.

It is a super-2 number, since 2×38405229² = 2949923229084882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38405229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38406229) 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, 6624 + ... + 10985.

It is an arithmetic number, because the mean of its divisors is an integer number (6410040).

Almost surely, 2^38405229 is an apocalyptic number.

It is an amenable number.

38405229 is a deficient number, since it is larger than the sum of its proper divisors (12875091).

38405229 is a wasteful number, since it uses less digits than its factorization.

38405229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18339.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 38405229 is about 6197.1952526929. The cubic root of 38405229 is about 337.3883790000.

The spelling of 38405229 in words is "thirty-eight million, four hundred five thousand, two hundred twenty-nine".