144093985 has 16 divisors (see below), whose sum is σ = 199656576. Its totient is φ = 97786368.

The previous prime is 144093979. The next prime is 144094031. The reversal of 144093985 is 589390441.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 144093985 - 2³ = 144093977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17827 + ... + 24616.

It is an arithmetic number, because the mean of its divisors is an integer number (12478536).

Almost surely, 2^144093985 is an apocalyptic number.

It is an amenable number.

144093985 is a deficient number, since it is larger than the sum of its proper divisors (55562591).

144093985 is an equidigital number, since it uses as much as digits as its factorization.

144093985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42552.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 144093985 is about 12003.9154029008. The cubic root of 144093985 is about 524.2622866254.

The spelling of 144093985 in words is "one hundred forty-four million, ninety-three thousand, nine hundred eighty-five".