144404402 has 4 divisors (see below), whose sum is σ = 216606606. Its totient is φ = 72202200.

The previous prime is 144404401. The next prime is 144404411. The reversal of 144404402 is 204404441.

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., 98585041 + 45819361 = 9929^2 + 6769^2 .

It is not an unprimeable number, because it can be changed into a prime (144404401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36101099 + ... + 36101102.

Almost surely, 2^144404402 is an apocalyptic number.

144404402 is a deficient number, since it is larger than the sum of its proper divisors (72202204).

144404402 is an equidigital number, since it uses as much as digits as its factorization.

144404402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72202203.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 144404402 is about 12016.8382696947. The cubic root of 144404402 is about 524.6384836936.

Adding to 144404402 its reverse (204404441), we get a palindrome (348808843).

The spelling of 144404402 in words is "one hundred forty-four million, four hundred four thousand, four hundred two".