144519977 has 4 divisors (see below), whose sum is σ = 165165696. Its totient is φ = 123874260.

The previous prime is 144519937. The next prime is 144519989. The reversal of 144519977 is 779915441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144519977 - 2¹⁸ = 144257833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144519917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10322849 + ... + 10322862.

It is an arithmetic number, because the mean of its divisors is an integer number (41291424).

Almost surely, 2^144519977 is an apocalyptic number.

It is an amenable number.

144519977 is a deficient number, since it is larger than the sum of its proper divisors (20645719).

144519977 is an equidigital number, since it uses as much as digits as its factorization.

144519977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20645718.

The product of its digits is 317520, while the sum is 47.

The square root of 144519977 is about 12021.6461851113. The cubic root of 144519977 is about 524.7784123073.

The spelling of 144519977 in words is "one hundred forty-four million, five hundred nineteen thousand, nine hundred seventy-seven".