144586993 has 16 divisors (see below), whose sum is σ = 156764160. Its totient is φ = 133005136.

The previous prime is 144586991. The next prime is 144587059. The reversal of 144586993 is 399685441.

It is a happy number.

144586993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144586993 - 2¹ = 144586991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144586991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62646 + ... + 64912.

It is an arithmetic number, because the mean of its divisors is an integer number (9797760).

Almost surely, 2^144586993 is an apocalyptic number.

It is an amenable number.

144586993 is a deficient number, since it is larger than the sum of its proper divisors (12177167).

144586993 is a wasteful number, since it uses less digits than its factorization.

144586993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396.

The product of its digits is 933120, while the sum is 49.

The square root of 144586993 is about 12024.4331675136. The cubic root of 144586993 is about 524.8595155480.

The spelling of 144586993 in words is "one hundred forty-four million, five hundred eighty-six thousand, nine hundred ninety-three".