38221969 has 8 divisors (see below), whose sum is σ = 39226880. Its totient is φ = 37222416.

The previous prime is 38221921. The next prime is 38221979. The reversal of 38221969 is 96912283.

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 a de Polignac number, because none of the positive numbers 2^k-38221969 is a prime.

It is a super-2 number, since 2×38221969² = 2921837828473922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38221919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15952 + ... + 18190.

It is an arithmetic number, because the mean of its divisors is an integer number (4903360).

Almost surely, 2^38221969 is an apocalyptic number.

It is an amenable number.

38221969 is a deficient number, since it is larger than the sum of its proper divisors (1004911).

38221969 is a wasteful number, since it uses less digits than its factorization.

38221969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679.

The product of its digits is 46656, while the sum is 40.

The square root of 38221969 is about 6182.3918510557. The cubic root of 38221969 is about 336.8508792649.

The spelling of 38221969 in words is "thirty-eight million, two hundred twenty-one thousand, nine hundred sixty-nine".