445985438 has 4 divisors (see below), whose sum is σ = 668978160. Its totient is φ = 222992718.

The previous prime is 445985431. The next prime is 445985447. The reversal of 445985438 is 834589544.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445985431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111496358 + ... + 111496361.

It is an arithmetic number, because the mean of its divisors is an integer number (167244540).

Almost surely, 2^445985438 is an apocalyptic number.

445985438 is a deficient number, since it is larger than the sum of its proper divisors (222992722).

445985438 is a wasteful number, since it uses less digits than its factorization.

445985438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222992721.

The product of its digits is 2764800, while the sum is 50.

The square root of 445985438 is about 21118.3673137864. The cubic root of 445985438 is about 764.0238095976.

The spelling of 445985438 in words is "four hundred forty-five million, nine hundred eighty-five thousand, four hundred thirty-eight".