144739969 has 8 divisors (see below), whose sum is σ = 159462720. Its totient is φ = 130278000.

The previous prime is 144739939. The next prime is 144739997. The reversal of 144739969 is 969937441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144739969 - 2⁹ = 144739457 is a prime.

It is a super-2 number, since 2×144739969² = 41899317252241922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144739939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64029 + ... + 66250.

It is an arithmetic number, because the mean of its divisors is an integer number (19932840).

Almost surely, 2^144739969 is an apocalyptic number.

It is an amenable number.

144739969 is a deficient number, since it is larger than the sum of its proper divisors (14722751).

144739969 is a wasteful number, since it uses less digits than its factorization.

144739969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130391.

The product of its digits is 1469664, while the sum is 52.

The square root of 144739969 is about 12030.7925341600. The cubic root of 144739969 is about 525.0445543442.

It can be divided in two parts, 14473 and 9969, that added together give a palindrome (24442).

The spelling of 144739969 in words is "one hundred forty-four million, seven hundred thirty-nine thousand, nine hundred sixty-nine".