38281399 has 8 divisors (see below), whose sum is σ = 43651440. Its totient is φ = 33257856.

The previous prime is 38281393. The next prime is 38281417. The reversal of 38281399 is 99318283.

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 not a de Polignac number, because 38281399 - 2⁵ = 38281367 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 (38281393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86389 + ... + 86830.

It is an arithmetic number, because the mean of its divisors is an integer number (5456430).

Almost surely, 2^38281399 is an apocalyptic number.

38281399 is a deficient number, since it is larger than the sum of its proper divisors (5370041).

38281399 is a wasteful number, since it uses less digits than its factorization.

38281399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173249.

The product of its digits is 93312, while the sum is 43.

The square root of 38281399 is about 6187.1963763889. The cubic root of 38281399 is about 337.0253747326.

The spelling of 38281399 in words is "thirty-eight million, two hundred eighty-one thousand, three hundred ninety-nine".