38399365 has 4 divisors (see below), whose sum is σ = 46079244. Its totient is φ = 30719488.

The previous prime is 38399353. The next prime is 38399419. The reversal of 38399365 is 56399383.

38399365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56399383 = 571 ⋅98773.

It can be written as a sum of positive squares in 2 ways, for example, as 10962721 + 27436644 = 3311^2 + 5238^2 .

It is a cyclic number.

It is not a de Polignac number, because 38399365 - 2¹³ = 38391173 is a prime.

It is a super-2 number, since 2×38399365² = 2949022464806450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3839932 + ... + 3839941.

It is an arithmetic number, because the mean of its divisors is an integer number (11519811).

Almost surely, 2^38399365 is an apocalyptic number.

It is an amenable number.

38399365 is a deficient number, since it is larger than the sum of its proper divisors (7679879).

38399365 is an equidigital number, since it uses as much as digits as its factorization.

38399365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7679878.

The product of its digits is 524880, while the sum is 46.

The square root of 38399365 is about 6196.7221173779. The cubic root of 38399365 is about 337.3712064586.

The spelling of 38399365 in words is "thirty-eight million, three hundred ninety-nine thousand, three hundred sixty-five".