144715869 has 16 divisors (see below), whose sum is σ = 216806400. Its totient is φ = 95391648.

The previous prime is 144715861. The next prime is 144715871. The reversal of 144715869 is 968517441.

It is not a de Polignac number, because 144715869 - 2³ = 144715861 is a prime.

It is a super-2 number, since 2×144715869² = 41885365480850322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144715861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27709 + ... + 32514.

It is an arithmetic number, because the mean of its divisors is an integer number (13550400).

Almost surely, 2^144715869 is an apocalyptic number.

It is an amenable number.

144715869 is a deficient number, since it is larger than the sum of its proper divisors (72090531).

144715869 is an equidigital number, since it uses as much as digits as its factorization.

144715869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60321 (or 60315 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 144715869 is about 12029.7908959383. The cubic root of 144715869 is about 525.0154117925.

The spelling of 144715869 in words is "one hundred forty-four million, seven hundred fifteen thousand, eight hundred sixty-nine".