444213454 has 4 divisors (see below), whose sum is σ = 666320184. Its totient is φ = 222106726.

The previous prime is 444213439. The next prime is 444213463. The reversal of 444213454 is 454312444.

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

It is a super-2 number, since 2×444213454² = 394651185429220232, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111053362 + ... + 111053365.

It is an arithmetic number, because the mean of its divisors is an integer number (166580046).

Almost surely, 2^444213454 is an apocalyptic number.

444213454 is a deficient number, since it is larger than the sum of its proper divisors (222106730).

444213454 is a wasteful number, since it uses less digits than its factorization.

444213454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222106729.

The product of its digits is 30720, while the sum is 31.

The square root of 444213454 is about 21076.3719363651. The cubic root of 444213454 is about 763.0105964322.

Adding to 444213454 its reverse (454312444), we get a palindrome (898525898).

The spelling of 444213454 in words is "four hundred forty-four million, two hundred thirteen thousand, four hundred fifty-four".