144112309 has 4 divisors (see below), whose sum is σ = 157213440. Its totient is φ = 131011180.

The previous prime is 144112303. The next prime is 144112327. The reversal of 144112309 is 903211441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144112309 - 2³ = 144112301 is a prime.

It is a super-2 number, since 2×144112309² = 41536715210622962, 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 (144112301) 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, 6550549 + ... + 6550570.

It is an arithmetic number, because the mean of its divisors is an integer number (39303360).

Almost surely, 2^144112309 is an apocalyptic number.

It is an amenable number.

144112309 is a deficient number, since it is larger than the sum of its proper divisors (13101131).

144112309 is a wasteful number, since it uses less digits than its factorization.

144112309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13101130.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 144112309 is about 12004.6786296010. The cubic root of 144112309 is about 524.2845086378.

The spelling of 144112309 in words is "one hundred forty-four million, one hundred twelve thousand, three hundred nine".