445685739 has 4 divisors (see below), whose sum is σ = 594247656. Its totient is φ = 297123824.

The previous prime is 445685707. The next prime is 445685741. The reversal of 445685739 is 937586544.

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

It is a cyclic number.

It is not a de Polignac number, because 445685739 - 2⁵ = 445685707 is a prime.

It is a super-2 number, since 2×445685739² = 397271555895952242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445685691 and 445685700.

It is not an unprimeable number, because it can be changed into a prime (445685749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74280954 + ... + 74280959.

It is an arithmetic number, because the mean of its divisors is an integer number (148561914).

Almost surely, 2^445685739 is an apocalyptic number.

445685739 is a deficient number, since it is larger than the sum of its proper divisors (148561917).

445685739 is a wasteful number, since it uses less digits than its factorization.

445685739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148561916.

The product of its digits is 3628800, while the sum is 51.

The square root of 445685739 is about 21111.2704260071. The cubic root of 445685739 is about 763.8526317506.

The spelling of 445685739 in words is "four hundred forty-five million, six hundred eighty-five thousand, seven hundred thirty-nine".