8144739 has 8 divisors (see below), whose sum is σ = 12066320. Its totient is φ = 5429808.

The previous prime is 8144693. The next prime is 8144743. The reversal of 8144739 is 9374418.

It is a happy number.

It is not a de Polignac number, because 8144739 - 2²⁰ = 7096163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8144039) 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 7 ways as a sum of consecutive naturals, for example, 150802 + ... + 150855.

It is an arithmetic number, because the mean of its divisors is an integer number (1508290).

Almost surely, 2^8144739 is an apocalyptic number.

8144739 is a deficient number, since it is larger than the sum of its proper divisors (3921581).

8144739 is a wasteful number, since it uses less digits than its factorization.

8144739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301666 (or 301660 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 8144739 is about 2853.8989120149. The cubic root of 8144739 is about 201.1989564876.

The spelling of 8144739 in words is "eight million, one hundred forty-four thousand, seven hundred thirty-nine".