445987398 has 8 divisors (see below), whose sum is σ = 891974808. Its totient is φ = 148662464.

The previous prime is 445987387. The next prime is 445987403. The reversal of 445987398 is 893789544.

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

445987398 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37165611 + ... + 37165622.

It is an arithmetic number, because the mean of its divisors is an integer number (111496851).

Almost surely, 2^445987398 is an apocalyptic number.

445987398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445987398 is a wasteful number, since it uses less digits than its factorization.

445987398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74331238.

The product of its digits is 8709120, while the sum is 57.

The square root of 445987398 is about 21118.4137188379. The cubic root of 445987398 is about 764.0249288303.

The spelling of 445987398 in words is "four hundred forty-five million, nine hundred eighty-seven thousand, three hundred ninety-eight".