144969761 has 8 divisors (see below), whose sum is σ = 156764160. Its totient is φ = 133538368.

The previous prime is 144969757. The next prime is 144969763. The reversal of 144969761 is 167969441.

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 144969761 - 2² = 144969757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144969763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89921 + ... + 91518.

It is an arithmetic number, because the mean of its divisors is an integer number (19595520).

Almost surely, 2^144969761 is an apocalyptic number.

It is an amenable number.

144969761 is a deficient number, since it is larger than the sum of its proper divisors (11794399).

144969761 is a wasteful number, since it uses less digits than its factorization.

144969761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181503.

The product of its digits is 326592, while the sum is 47.

The square root of 144969761 is about 12040.3389071903. The cubic root of 144969761 is about 525.3222644244.

The spelling of 144969761 in words is "one hundred forty-four million, nine hundred sixty-nine thousand, seven hundred sixty-one".