144117769 has 2 divisors, whose sum is σ = 144117770. Its totient is φ = 144117768.

The previous prime is 144117767. The next prime is 144117803. The reversal of 144117769 is 967711441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138415225 + 5702544 = 11765^2 + 2388^2 .

It is an emirp because it is prime and its reverse (967711441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144117769 - 2¹ = 144117767 is a prime.

It is a super-2 number, since 2×144117769² = 41539862683074722, which contains 22 as substring.

Together with 144117767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (144117761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72058884 + 72058885.

It is an arithmetic number, because the mean of its divisors is an integer number (72058885).

Almost surely, 2^144117769 is an apocalyptic number.

It is an amenable number.

144117769 is a deficient number, since it is larger than the sum of its proper divisors (1).

144117769 is an equidigital number, since it uses as much as digits as its factorization.

144117769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 40.

The square root of 144117769 is about 12004.9060387826. The cubic root of 144117769 is about 524.2911297638.

The spelling of 144117769 in words is "one hundred forty-four million, one hundred seventeen thousand, seven hundred sixty-nine".