38564749 has 4 divisors (see below), whose sum is σ = 39197020. Its totient is φ = 37932480.

The previous prime is 38564741. The next prime is 38564759. The reversal of 38564749 is 94746583.

38564749 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: 94746583 = 2731 ⋅34693.

It can be written as a sum of positive squares in 2 ways, for example, as 3636649 + 34928100 = 1907^2 + 5910^2 .

It is a cyclic number.

It is not a de Polignac number, because 38564749 - 2³ = 38564741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38564699 and 38564708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38564741) 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, 316044 + ... + 316165.

It is an arithmetic number, because the mean of its divisors is an integer number (9799255).

Almost surely, 2^38564749 is an apocalyptic number.

It is an amenable number.

38564749 is a deficient number, since it is larger than the sum of its proper divisors (632271).

38564749 is an equidigital number, since it uses as much as digits as its factorization.

38564749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632270.

The product of its digits is 725760, while the sum is 46.

The square root of 38564749 is about 6210.0522542085. The cubic root of 38564749 is about 337.8548593137.

The spelling of 38564749 in words is "thirty-eight million, five hundred sixty-four thousand, seven hundred forty-nine".