38986399 has 4 divisors (see below), whose sum is σ = 39044664. Its totient is φ = 38928136.

The previous prime is 38986393. The next prime is 38986417. The reversal of 38986399 is 99368983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38986399 - 2³ = 38986391 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 (38986391) 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, 28117 + ... + 29470.

It is an arithmetic number, because the mean of its divisors is an integer number (9761166).

Almost surely, 2^38986399 is an apocalyptic number.

38986399 is a deficient number, since it is larger than the sum of its proper divisors (58265).

38986399 is an equidigital number, since it uses as much as digits as its factorization.

38986399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58264.

The product of its digits is 2519424, while the sum is 55.

The square root of 38986399 is about 6243.9089519307. The cubic root of 38986399 is about 339.0817176094.

The spelling of 38986399 in words is "thirty-eight million, nine hundred eighty-six thousand, three hundred ninety-nine".