38516399 has 6 divisors (see below), whose sum is σ = 38993016. Its totient is φ = 38045540.

The previous prime is 38516381. The next prime is 38516447. The reversal of 38516399 is 99361583.

It is not a de Polignac number, because 38516399 - 2¹² = 38512303 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 (38516899) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4094 + ... + 9684.

It is an arithmetic number, because the mean of its divisors is an integer number (6498836).

Almost surely, 2^38516399 is an apocalyptic number.

38516399 is a deficient number, since it is larger than the sum of its proper divisors (476617).

38516399 is an frugal number, since it uses more digits than its factorization.

38516399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5757 (or 5674 counting only the distinct ones).

The product of its digits is 174960, while the sum is 44.

The square root of 38516399 is about 6206.1581513848. The cubic root of 38516399 is about 337.7136067075.

The spelling of 38516399 in words is "thirty-eight million, five hundred sixteen thousand, three hundred ninety-nine".