144968269 has 4 divisors (see below), whose sum is σ = 147344860. Its totient is φ = 142591680.

The previous prime is 144968261. The next prime is 144968279. The reversal of 144968269 is 962869441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8779369 + 136188900 = 2963^2 + 11670^2 .

It is a cyclic number.

It is not a de Polignac number, because 144968269 - 2³ = 144968261 is a prime.

It is a super-2 number, since 2×144968269² = 42031598033712722, 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 (144968261) 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, 1188204 + ... + 1188325.

It is an arithmetic number, because the mean of its divisors is an integer number (36836215).

Almost surely, 2^144968269 is an apocalyptic number.

It is an amenable number.

144968269 is a deficient number, since it is larger than the sum of its proper divisors (2376591).

144968269 is an equidigital number, since it uses as much as digits as its factorization.

144968269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376590.

The product of its digits is 746496, while the sum is 49.

The square root of 144968269 is about 12040.2769486420. The cubic root of 144968269 is about 525.3204622474.

The spelling of 144968269 in words is "one hundred forty-four million, nine hundred sixty-eight thousand, two hundred sixty-nine".