38634397 has 4 divisors (see below), whose sum is σ = 39123520. Its totient is φ = 38145276.

The previous prime is 38634377. The next prime is 38634413. The reversal of 38634397 is 79343683.

38634397 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79343683 = 3181 ⋅24943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38634397 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 (38634307) by changing a digit.

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, 244443 + ... + 244600.

It is an arithmetic number, because the mean of its divisors is an integer number (9780880).

Almost surely, 2^38634397 is an apocalyptic number.

It is an amenable number.

38634397 is a deficient number, since it is larger than the sum of its proper divisors (489123).

38634397 is an equidigital number, since it uses as much as digits as its factorization.

38634397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489122.

The product of its digits is 326592, while the sum is 43.

The square root of 38634397 is about 6215.6574069040. The cubic root of 38634397 is about 338.0581258064.

The spelling of 38634397 in words is "thirty-eight million, six hundred thirty-four thousand, three hundred ninety-seven".