144969812 has 24 divisors (see below), whose sum is σ = 289285416. Its totient is φ = 62972928.

The previous prime is 144969793. The next prime is 144969821. The reversal of 144969812 is 218969441.

It can be written as a sum of positive squares in 4 ways, for example, as 633616 + 144336196 = 796^2 + 12014^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81113 + ... + 82880.

It is an arithmetic number, because the mean of its divisors is an integer number (12053559).

Almost surely, 2^144969812 is an apocalyptic number.

It is an amenable number.

144969812 is a deficient number, since it is larger than the sum of its proper divisors (144315604).

144969812 is a wasteful number, since it uses less digits than its factorization.

144969812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164027 (or 164025 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 144969812 is about 12040.3410250707. The cubic root of 144969812 is about 525.3223260267.

The spelling of 144969812 in words is "one hundred forty-four million, nine hundred sixty-nine thousand, eight hundred twelve".