144819747 has 6 divisors (see below), whose sum is σ = 209184092. Its totient is φ = 96546492.

The previous prime is 144819713. The next prime is 144819761. The reversal of 144819747 is 747918441.

It is a happy number.

It is not a de Polignac number, because 144819747 - 2⁶ = 144819683 is a prime.

It is a super-2 number, since 2×144819747² = 41945518242288018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144819047) 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 5 ways as a sum of consecutive naturals, for example, 8045533 + ... + 8045550.

Almost surely, 2^144819747 is an apocalyptic number.

144819747 is a deficient number, since it is larger than the sum of its proper divisors (64364345).

144819747 is a wasteful number, since it uses less digits than its factorization.

144819747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16091089 (or 16091086 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 144819747 is about 12034.1076528341. The cubic root of 144819747 is about 525.1410015830.

The spelling of 144819747 in words is "one hundred forty-four million, eight hundred nineteen thousand, seven hundred forty-seven".