144718869 has 4 divisors (see below), whose sum is σ = 192958496. Its totient is φ = 96479244.

The previous prime is 144718843. The next prime is 144718897. The reversal of 144718869 is 968817441.

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, and also an emirpimes, since its reverse is a distinct semiprime: 968817441 = 3 ⋅322939147.

It is not a de Polignac number, because 144718869 - 2⁵ = 144718837 is a prime.

It is a super-2 number, since 2×144718869² = 41887102089278322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144718669) 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, 24119809 + ... + 24119814.

It is an arithmetic number, because the mean of its divisors is an integer number (48239624).

Almost surely, 2^144718869 is an apocalyptic number.

It is an amenable number.

144718869 is a deficient number, since it is larger than the sum of its proper divisors (48239627).

144718869 is an equidigital number, since it uses as much as digits as its factorization.

144718869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48239626.

The product of its digits is 387072, while the sum is 48.

The square root of 144718869 is about 12029.9155857387. The cubic root of 144718869 is about 525.0190396723.

The spelling of 144718869 in words is "one hundred forty-four million, seven hundred eighteen thousand, eight hundred sixty-nine".