38229491 has 2 divisors, whose sum is σ = 38229492. Its totient is φ = 38229490.

The previous prime is 38229487. The next prime is 38229523. The reversal of 38229491 is 19492283.

It is a weak prime.

It is an emirp because it is prime and its reverse (19492283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38229491 - 2² = 38229487 is a prime.

It is a super-2 number, since 2×38229491² = 2922987964238162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38229431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19114745 + 19114746.

It is an arithmetic number, because the mean of its divisors is an integer number (19114746).

Almost surely, 2^38229491 is an apocalyptic number.

38229491 is a deficient number, since it is larger than the sum of its proper divisors (1).

38229491 is an equidigital number, since it uses as much as digits as its factorization.

38229491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 38229491 is about 6183.0001617338. Note that the first 3 decimals coincide. The cubic root of 38229491 is about 336.8729749879.

The spelling of 38229491 in words is "thirty-eight million, two hundred twenty-nine thousand, four hundred ninety-one".