445730709 has 16 divisors (see below), whose sum is σ = 629742080. Its totient is φ = 279644400.

The previous prime is 445730683. The next prime is 445730713. The reversal of 445730709 is 907037544.

It is a de Polignac number, because none of the positive numbers 2^k-445730709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445730759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17287 + ... + 34500.

It is an arithmetic number, because the mean of its divisors is an integer number (39358880).

Almost surely, 2^445730709 is an apocalyptic number.

It is an amenable number.

445730709 is a deficient number, since it is larger than the sum of its proper divisors (184011371).

445730709 is a wasteful number, since it uses less digits than its factorization.

445730709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51960.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 445730709 is about 21112.3354700516. The cubic root of 445730709 is about 763.8783219733.

The spelling of 445730709 in words is "four hundred forty-five million, seven hundred thirty thousand, seven hundred nine".