38224289 has 4 divisors (see below), whose sum is σ = 38945556. Its totient is φ = 37503024.

The previous prime is 38224283. The next prime is 38224297. The reversal of 38224289 is 98242283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98242283 = 631 ⋅155693.

It can be written as a sum of positive squares in 2 ways, for example, as 9150625 + 29073664 = 3025^2 + 5392^2 .

It is a cyclic number.

It is not a de Polignac number, because 38224289 - 2⁴ = 38224273 is a prime.

It is a super-2 number, since 2×38224289² = 2922192539111042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38224283) 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, 360554 + ... + 360659.

It is an arithmetic number, because the mean of its divisors is an integer number (9736389).

Almost surely, 2^38224289 is an apocalyptic number.

It is an amenable number.

38224289 is a deficient number, since it is larger than the sum of its proper divisors (721267).

38224289 is an equidigital number, since it uses as much as digits as its factorization.

38224289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721266.

The product of its digits is 55296, while the sum is 38.

The square root of 38224289 is about 6182.5794778555. The cubic root of 38224289 is about 336.8576945272.

The spelling of 38224289 in words is "thirty-eight million, two hundred twenty-four thousand, two hundred eighty-nine".