144669747 has 16 divisors (see below), whose sum is σ = 203712768. Its totient is φ = 91138080.

The previous prime is 144669739. The next prime is 144669757. The reversal of 144669747 is 747966441.

It is not a de Polignac number, because 144669747 - 2³ = 144669739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144669696 and 144669705.

It is not an unprimeable number, because it can be changed into a prime (144669727) 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, 6904 + ... + 18357.

It is an arithmetic number, because the mean of its divisors is an integer number (12732048).

Almost surely, 2^144669747 is an apocalyptic number.

144669747 is a deficient number, since it is larger than the sum of its proper divisors (59043021).

144669747 is a wasteful number, since it uses less digits than its factorization.

144669747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25370.

The product of its digits is 1016064, while the sum is 48.

The square root of 144669747 is about 12027.8737522473. The cubic root of 144669747 is about 524.9596304560.

The spelling of 144669747 in words is "one hundred forty-four million, six hundred sixty-nine thousand, seven hundred forty-seven".