144887863 has 4 divisors (see below), whose sum is σ = 152513560. Its totient is φ = 137262168.

The previous prime is 144887851. The next prime is 144887867. The reversal of 144887863 is 368788441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368788441 = 7 ⋅52684063.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144887863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144887867) 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, 3812820 + ... + 3812857.

It is an arithmetic number, because the mean of its divisors is an integer number (38128390).

Almost surely, 2^144887863 is an apocalyptic number.

144887863 is a deficient number, since it is larger than the sum of its proper divisors (7625697).

144887863 is an equidigital number, since it uses as much as digits as its factorization.

144887863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7625696.

The product of its digits is 1032192, while the sum is 49.

The square root of 144887863 is about 12036.9374427219. The cubic root of 144887863 is about 525.2233220732.

The spelling of 144887863 in words is "one hundred forty-four million, eight hundred eighty-seven thousand, eight hundred sixty-three".