144855899 has 4 divisors (see below), whose sum is σ = 149850960. Its totient is φ = 139860840.

The previous prime is 144855889. The next prime is 144855913. The reversal of 144855899 is 998558441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144855899 - 2⁴ = 144855883 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 144855899.

It is not an unprimeable number, because it can be changed into a prime (144855869) 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, 2497487 + ... + 2497544.

It is an arithmetic number, because the mean of its divisors is an integer number (37462740).

Almost surely, 2^144855899 is an apocalyptic number.

144855899 is a deficient number, since it is larger than the sum of its proper divisors (4995061).

144855899 is an equidigital number, since it uses as much as digits as its factorization.

144855899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4995060.

The product of its digits is 2073600, while the sum is 53.

The square root of 144855899 is about 12035.6096231142. The cubic root of 144855899 is about 525.1846957116.

The spelling of 144855899 in words is "one hundred forty-four million, eight hundred fifty-five thousand, eight hundred ninety-nine".