445989693 has 8 divisors (see below), whose sum is σ = 595224000. Its totient is φ = 297040928.

The previous prime is 445989689. The next prime is 445989707. The reversal of 445989693 is 396989544.

It is a happy number.

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 445989693 - 2² = 445989689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445989613) 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, 67713 + ... + 74006.

It is an arithmetic number, because the mean of its divisors is an integer number (74403000).

Almost surely, 2^445989693 is an apocalyptic number.

It is an amenable number.

445989693 is a deficient number, since it is larger than the sum of its proper divisors (149234307).

445989693 is a wasteful number, since it uses less digits than its factorization.

445989693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142771.

The product of its digits is 8398080, while the sum is 57.

The square root of 445989693 is about 21118.4680552354. The cubic root of 445989693 is about 764.0262393563.

The spelling of 445989693 in words is "four hundred forty-five million, nine hundred eighty-nine thousand, six hundred ninety-three".