38938649 has 4 divisors (see below), whose sum is σ = 38992080. Its totient is φ = 38885220.

The previous prime is 38938639. The next prime is 38938651. The reversal of 38938649 is 94683983.

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.

It is a cyclic number.

It is not a de Polignac number, because 38938649 - 2⁴ = 38938633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38938597 and 38938606.

It is not an unprimeable number, because it can be changed into a prime (38938639) 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, 25607 + ... + 27084.

It is an arithmetic number, because the mean of its divisors is an integer number (9748020).

Almost surely, 2^38938649 is an apocalyptic number.

It is an amenable number.

38938649 is a deficient number, since it is larger than the sum of its proper divisors (53431).

38938649 is an equidigital number, since it uses as much as digits as its factorization.

38938649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53430.

The product of its digits is 1119744, while the sum is 50.

The square root of 38938649 is about 6240.0840539211. The cubic root of 38938649 is about 338.9432268608.

The spelling of 38938649 in words is "thirty-eight million, nine hundred thirty-eight thousand, six hundred forty-nine".