144940869 has 24 divisors (see below), whose sum is σ = 217184760. Its totient is φ = 93034368.

The previous prime is 144940867. The next prime is 144940883. The reversal of 144940869 is 968049441.

144940869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18378369 + 126562500 = 4287^2 + 11250^2 .

It is not a de Polignac number, because 144940869 - 2¹ = 144940867 is a prime.

It is a super-2 number, since 2×144940869² = 42015711012950322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144940867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144879 + ... + 145875.

It is an arithmetic number, because the mean of its divisors is an integer number (9049365).

Almost surely, 2^144940869 is an apocalyptic number.

It is an amenable number.

144940869 is a deficient number, since it is larger than the sum of its proper divisors (72243891).

144940869 is a wasteful number, since it uses less digits than its factorization.

144940869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 144940869 is about 12039.1390472907. The cubic root of 144940869 is about 525.2873637684.

The spelling of 144940869 in words is "one hundred forty-four million, nine hundred forty thousand, eight hundred sixty-nine".