38288399 has 4 divisors (see below), whose sum is σ = 39953136. Its totient is φ = 36623664.

The previous prime is 38288389. The next prime is 38288407. The reversal of 38288399 is 99388283.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99388283 = 439 ⋅226397.

It is a cyclic number.

It is not a de Polignac number, because 38288399 - 2¹² = 38284303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38288389) 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 3 ways as a sum of consecutive naturals, for example, 832334 + ... + 832379.

It is an arithmetic number, because the mean of its divisors is an integer number (9988284).

Almost surely, 2^38288399 is an apocalyptic number.

38288399 is a deficient number, since it is larger than the sum of its proper divisors (1664737).

38288399 is a wasteful number, since it uses less digits than its factorization.

38288399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664736.

The product of its digits is 746496, while the sum is 50.

The square root of 38288399 is about 6187.7620348556. The cubic root of 38288399 is about 337.0459158997.

The spelling of 38288399 in words is "thirty-eight million, two hundred eighty-eight thousand, three hundred ninety-nine".