144472993 has 8 divisors (see below), whose sum is σ = 165799040. Its totient is φ = 123318720.

The previous prime is 144472981. The next prime is 144473009. The reversal of 144472993 is 399274441.

144472993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144472993 - 2⁹ = 144472481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144472943) 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, 41133 + ... + 44506.

It is an arithmetic number, because the mean of its divisors is an integer number (20724880).

Almost surely, 2^144472993 is an apocalyptic number.

It is an amenable number.

144472993 is a deficient number, since it is larger than the sum of its proper divisors (21326047).

144472993 is an equidigital number, since it uses as much as digits as its factorization.

144472993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85887.

The product of its digits is 217728, while the sum is 43.

The square root of 144472993 is about 12019.6918845701. The cubic root of 144472993 is about 524.7215369838.

The spelling of 144472993 in words is "one hundred forty-four million, four hundred seventy-two thousand, nine hundred ninety-three".