444642145 has 16 divisors (see below), whose sum is σ = 563599872. Its totient is φ = 336228480.

The previous prime is 444642139. The next prime is 444642151. The reversal of 444642145 is 541246444.

It is an interprime number because it is at equal distance from previous prime (444642139) and next prime (444642151).

It is not a de Polignac number, because 444642145 - 2⁷ = 444642017 is a prime.

It is a super-2 number, since 2×444642145² = 395413274220402050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444642145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26692 + ... + 40021.

It is an arithmetic number, because the mean of its divisors is an integer number (35224992).

Almost surely, 2^444642145 is an apocalyptic number.

It is an amenable number.

444642145 is a deficient number, since it is larger than the sum of its proper divisors (118957727).

444642145 is a wasteful number, since it uses less digits than its factorization.

444642145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66792.

The product of its digits is 61440, while the sum is 34.

The square root of 444642145 is about 21086.5394268476. The cubic root of 444642145 is about 763.2559669157.

Adding to 444642145 its reverse (541246444), we get a palindrome (985888589).

The spelling of 444642145 in words is "four hundred forty-four million, six hundred forty-two thousand, one hundred forty-five".