144422993 has 8 divisors (see below), whose sum is σ = 169671936. Its totient is φ = 121194000.

The previous prime is 144422983. The next prime is 144423023. The reversal of 144422993 is 399224441.

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 144422993 - 2¹⁰ = 144421969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144422983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504833 + ... + 505118.

It is an arithmetic number, because the mean of its divisors is an integer number (21208992).

Almost surely, 2^144422993 is an apocalyptic number.

144422993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

144422993 is a deficient number, since it is larger than the sum of its proper divisors (25248943).

144422993 is a wasteful number, since it uses less digits than its factorization.

144422993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009975.

The product of its digits is 62208, while the sum is 38.

The square root of 144422993 is about 12017.6117843771. The cubic root of 144422993 is about 524.6609971705.

The spelling of 144422993 in words is "one hundred forty-four million, four hundred twenty-two thousand, nine hundred ninety-three".