444739649 has 4 divisors (see below), whose sum is σ = 448241664. Its totient is φ = 441237636.

The previous prime is 444739639. The next prime is 444739651. The reversal of 444739649 is 946937444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 444739649 - 2¹² = 444735553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 444739597 and 444739606.

It is not an unprimeable number, because it can be changed into a prime (444739619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750817 + ... + 1751070.

It is an arithmetic number, because the mean of its divisors is an integer number (112060416).

Almost surely, 2^444739649 is an apocalyptic number.

It is an amenable number.

444739649 is a deficient number, since it is larger than the sum of its proper divisors (3502015).

444739649 is a wasteful number, since it uses less digits than its factorization.

444739649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502014.

The product of its digits is 2612736, while the sum is 50.

The square root of 444739649 is about 21088.8512963604. The cubic root of 444739649 is about 763.3117534034.

The spelling of 444739649 in words is "four hundred forty-four million, seven hundred thirty-nine thousand, six hundred forty-nine".