144323669 has 6 divisors (see below), whose sum is σ = 167886774. Its totient is φ = 123705960.

The previous prime is 144323657. The next prime is 144323687. The reversal of 144323669 is 966323441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 88642225 + 55681444 = 9415^2 + 7462^2 .

It is not a de Polignac number, because 144323669 - 2¹⁶ = 144258133 is a prime.

It is a super-2 number, since 2×144323669² = 41658642867243122, 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 (144323629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1472642 + ... + 1472739.

It is an arithmetic number, because the mean of its divisors is an integer number (27981129).

Almost surely, 2^144323669 is an apocalyptic number.

It is an amenable number.

144323669 is a deficient number, since it is larger than the sum of its proper divisors (23563105).

144323669 is an equidigital number, since it uses as much as digits as its factorization.

144323669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945395 (or 2945388 counting only the distinct ones).

The product of its digits is 93312, while the sum is 38.

The square root of 144323669 is about 12013.4786385959. The cubic root of 144323669 is about 524.5406945821.

The spelling of 144323669 in words is "one hundred forty-four million, three hundred twenty-three thousand, six hundred sixty-nine".