4144642897 has 4 divisors (see below), whose sum is σ = 4148711280. Its totient is φ = 4140574516.

The previous prime is 4144642889. The next prime is 4144642903. The reversal of 4144642897 is 7982464414.

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 4144642897 - 2³ = 4144642889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4144642897.

It is not an unprimeable number, because it can be changed into a prime (4144642837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032663 + ... + 2034700.

It is an arithmetic number, because the mean of its divisors is an integer number (1037177820).

Almost surely, 2^4144642897 is an apocalyptic number.

It is an amenable number.

4144642897 is a deficient number, since it is larger than the sum of its proper divisors (4068383).

4144642897 is a wasteful number, since it uses less digits than its factorization.

4144642897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068382.

The product of its digits is 1548288, while the sum is 49.

The square root of 4144642897 is about 64378.9010235496. The cubic root of 4144642897 is about 1606.3088022360.

The spelling of 4144642897 in words is "four billion, one hundred forty-four million, six hundred forty-two thousand, eight hundred ninety-seven".