444401420402 has 4 divisors (see below), whose sum is σ = 666602130606. Its totient is φ = 222200710200.

The previous prime is 444401420387. The next prime is 444401420413. The reversal of 444401420402 is 204024104444.

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., 266546070961 + 177855349441 = 516281^2 + 421729^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111100355099 + ... + 111100355102.

Almost surely, 2^444401420402 is an apocalyptic number.

444401420402 is a deficient number, since it is larger than the sum of its proper divisors (222200710204).

444401420402 is a wasteful number, since it uses less digits than its factorization.

444401420402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222200710203.

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 444401420402 its reverse (204024104444), we get a palindrome (648425524846).

The spelling of 444401420402 in words is "four hundred forty-four billion, four hundred one million, four hundred twenty thousand, four hundred two".