8144749 has 4 divisors (see below), whose sum is σ = 8573440. Its totient is φ = 7716060.

The previous prime is 8144743. The next prime is 8144753. The reversal of 8144749 is 9474418.

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 8144749 - 2⁹ = 8144237 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8144743) 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, 214317 + ... + 214354.

It is an arithmetic number, because the mean of its divisors is an integer number (2143360).

Almost surely, 2^8144749 is an apocalyptic number.

It is an amenable number.

8144749 is a deficient number, since it is larger than the sum of its proper divisors (428691).

8144749 is a wasteful number, since it uses less digits than its factorization.

8144749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428690.

The product of its digits is 32256, while the sum is 37.

The square root of 8144749 is about 2853.9006640036. The cubic root of 8144749 is about 201.1990388307.

The spelling of 8144749 in words is "eight million, one hundred forty-four thousand, seven hundred forty-nine".