445421404 has 24 divisors (see below), whose sum is σ = 815891328. Its totient is φ = 212369520.

The previous prime is 445421363. The next prime is 445421447. The reversal of 445421404 is 404124544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23139 + ... + 37765.

It is an arithmetic number, because the mean of its divisors is an integer number (33995472).

Almost surely, 2^445421404 is an apocalyptic number.

It is an amenable number.

445421404 is a deficient number, since it is larger than the sum of its proper divisors (370469924).

445421404 is a wasteful number, since it uses less digits than its factorization.

445421404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14985 (or 14983 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 445421404 is about 21105.0089789130. The cubic root of 445421404 is about 763.7015889126.

Adding to 445421404 its reverse (404124544), we get a palindrome (849545948).

The spelling of 445421404 in words is "four hundred forty-five million, four hundred twenty-one thousand, four hundred four".