38648999 has 4 divisors (see below), whose sum is σ = 39024336. Its totient is φ = 38273664.

The previous prime is 38648969. The next prime is 38649001. The reversal of 38648999 is 99984683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99984683 = 7127 ⋅14029.

It is a cyclic number.

It is not a de Polignac number, because 38648999 - 2²⁴ = 21871783 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 (38648969) 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, 187514 + ... + 187719.

It is an arithmetic number, because the mean of its divisors is an integer number (9756084).

Almost surely, 2^38648999 is an apocalyptic number.

38648999 is a deficient number, since it is larger than the sum of its proper divisors (375337).

38648999 is a wasteful number, since it uses less digits than its factorization.

38648999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375336.

The product of its digits is 3359232, while the sum is 56.

The square root of 38648999 is about 6216.8319102257. The cubic root of 38648999 is about 338.1007105096.

The spelling of 38648999 in words is "thirty-eight million, six hundred forty-eight thousand, nine hundred ninety-nine".