144226994 has 4 divisors (see below), whose sum is σ = 216340494. Its totient is φ = 72113496.

The previous prime is 144226993. The next prime is 144227009. The reversal of 144226994 is 499622441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 137007025 + 7219969 = 11705^2 + 2687^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144226993) 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 as a sum of consecutive naturals, namely, 36056747 + ... + 36056750.

Almost surely, 2^144226994 is an apocalyptic number.

144226994 is a deficient number, since it is larger than the sum of its proper divisors (72113500).

144226994 is an equidigital number, since it uses as much as digits as its factorization.

144226994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72113499.

The product of its digits is 124416, while the sum is 41.

The square root of 144226994 is about 12009.4543589624. The cubic root of 144226994 is about 524.4235474806.

The spelling of 144226994 in words is "one hundred forty-four million, two hundred twenty-six thousand, nine hundred ninety-four".