38891223 has 24 divisors (see below), whose sum is σ = 67979808. Its totient is φ = 20915712.

The previous prime is 38891219. The next prime is 38891239. The reversal of 38891223 is 32219883.

It is a happy number.

It is not a de Polignac number, because 38891223 - 2² = 38891219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38891023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17086 + ... + 19227.

It is an arithmetic number, because the mean of its divisors is an integer number (2832492).

Almost surely, 2^38891223 is an apocalyptic number.

38891223 is a deficient number, since it is larger than the sum of its proper divisors (29088585).

38891223 is a wasteful number, since it uses less digits than its factorization.

38891223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36343 (or 36340 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 38891223 is about 6236.2827870455. The cubic root of 38891223 is about 338.8055637037.

The spelling of 38891223 in words is "thirty-eight million, eight hundred ninety-one thousand, two hundred twenty-three".