445569913 has 8 divisors (see below), whose sum is σ = 470640896. Its totient is φ = 421167600.

The previous prime is 445569911. The next prime is 445569941. The reversal of 445569913 is 319965544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 445569913 - 2¹ = 445569911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445569911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165798 + ... + 168463.

It is an arithmetic number, because the mean of its divisors is an integer number (58830112).

Almost surely, 2^445569913 is an apocalyptic number.

445569913 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

445569913 is a deficient number, since it is larger than the sum of its proper divisors (25070983).

445569913 is a wasteful number, since it uses less digits than its factorization.

445569913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334335.

The product of its digits is 583200, while the sum is 46.

The square root of 445569913 is about 21108.5270210879. The cubic root of 445569913 is about 763.7864553303.

The spelling of 445569913 in words is "four hundred forty-five million, five hundred sixty-nine thousand, nine hundred thirteen".