144477819 has 12 divisors (see below), whose sum is σ = 209681992. Its totient is φ = 95860800.

The previous prime is 144477793. The next prime is 144477847. The reversal of 144477819 is 918774441.

It is a happy number.

It is not a de Polignac number, because 144477819 - 2¹⁷ = 144346747 is a prime.

It is a super-2 number, since 2×144477819² = 41747680365993522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144477869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36142 + ... + 39939.

Almost surely, 2^144477819 is an apocalyptic number.

144477819 is a deficient number, since it is larger than the sum of its proper divisors (65204173).

144477819 is a wasteful number, since it uses less digits than its factorization.

144477819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76298 (or 76295 counting only the distinct ones).

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

The square root of 144477819 is about 12019.8926367917. The cubic root of 144477819 is about 524.7273795474.

The spelling of 144477819 in words is "one hundred forty-four million, four hundred seventy-seven thousand, eight hundred nineteen".