38864549 has 4 divisors (see below), whose sum is σ = 40554336. Its totient is φ = 37174764.

The previous prime is 38864521. The next prime is 38864587. The reversal of 38864549 is 94546883.

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: 94546883 = 167 ⋅566149.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38864549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38864509) 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, 844859 + ... + 844904.

It is an arithmetic number, because the mean of its divisors is an integer number (10138584).

Almost surely, 2^38864549 is an apocalyptic number.

It is an amenable number.

38864549 is a deficient number, since it is larger than the sum of its proper divisors (1689787).

38864549 is a wasteful number, since it uses less digits than its factorization.

38864549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689786.

The product of its digits is 829440, while the sum is 47.

The square root of 38864549 is about 6234.1438064902. The cubic root of 38864549 is about 338.7280880695.

The spelling of 38864549 in words is "thirty-eight million, eight hundred sixty-four thousand, five hundred forty-nine".