144609729 has 16 divisors (see below), whose sum is σ = 211451904. Its totient is φ = 87179600.

The previous prime is 144609709. The next prime is 144609739. The reversal of 144609729 is 927906441.

It is a cyclic number.

It is not a de Polignac number, because 144609729 - 2⁷ = 144609601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144609709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5169 + ... + 17774.

It is an arithmetic number, because the mean of its divisors is an integer number (13215744).

Almost surely, 2^144609729 is an apocalyptic number.

It is an amenable number.

144609729 is a deficient number, since it is larger than the sum of its proper divisors (66842175).

144609729 is a wasteful number, since it uses less digits than its factorization.

144609729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23148.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 144609729 is about 12025.3785387405. The cubic root of 144609729 is about 524.8870251238.

The spelling of 144609729 in words is "one hundred forty-four million, six hundred nine thousand, seven hundred twenty-nine".