144399977 has 8 divisors (see below), whose sum is σ = 148097664. Its totient is φ = 140717808.

The previous prime is 144399973. The next prime is 144400001. The reversal of 144399977 is 779993441.

It is a happy number.

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 144399977 - 2² = 144399973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144399973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16283 + ... + 23535.

It is an arithmetic number, because the mean of its divisors is an integer number (18512208).

Almost surely, 2^144399977 is an apocalyptic number.

It is an amenable number.

144399977 is a deficient number, since it is larger than the sum of its proper divisors (3697687).

144399977 is an equidigital number, since it uses as much as digits as its factorization.

144399977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7759.

The product of its digits is 1714608, while the sum is 53.

The square root of 144399977 is about 12016.6541516347. The cubic root of 144399977 is about 524.6331247872.

The spelling of 144399977 in words is "one hundred forty-four million, three hundred ninety-nine thousand, nine hundred seventy-seven".