144979897 has 4 divisors (see below), whose sum is σ = 145019520. Its totient is φ = 144940276.

The previous prime is 144979889. The next prime is 144979907. The reversal of 144979897 is 798979441.

144979897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 144979897 - 2³ = 144979889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144979837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13693 + ... + 21850.

It is an arithmetic number, because the mean of its divisors is an integer number (36254880).

Almost surely, 2^144979897 is an apocalyptic number.

It is an amenable number.

144979897 is a deficient number, since it is larger than the sum of its proper divisors (39623).

144979897 is an equidigital number, since it uses as much as digits as its factorization.

144979897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39622.

The product of its digits is 4572288, while the sum is 58.

The square root of 144979897 is about 12040.7598182175. The cubic root of 144979897 is about 525.3345073049.

The spelling of 144979897 in words is "one hundred forty-four million, nine hundred seventy-nine thousand, eight hundred ninety-seven".