144772217 has 8 divisors (see below), whose sum is σ = 145681152. Its totient is φ = 143866800.

The previous prime is 144772211. The next prime is 144772249. The reversal of 144772217 is 712277441.

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 144772217 - 2¹² = 144768121 is a prime.

It is a super-4 number, since 4×144772217⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144772211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145592 + ... + 146582.

It is an arithmetic number, because the mean of its divisors is an integer number (18210144).

Almost surely, 2^144772217 is an apocalyptic number.

It is an amenable number.

144772217 is a deficient number, since it is larger than the sum of its proper divisors (908935).

144772217 is an equidigital number, since it uses as much as digits as its factorization.

144772217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759.

The product of its digits is 21952, while the sum is 35.

The square root of 144772217 is about 12032.1326871008. The cubic root of 144772217 is about 525.0835446789.

The spelling of 144772217 in words is "one hundred forty-four million, seven hundred seventy-two thousand, two hundred seventeen".