445421602 has 4 divisors (see below), whose sum is σ = 668132406. Its totient is φ = 222710800.

The previous prime is 445421569. The next prime is 445421623. The reversal of 445421602 is 206124544.

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

It can be written as a sum of positive squares in only one way, i.e., 343027441 + 102394161 = 18521^2 + 10119^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111355399 + ... + 111355402.

Almost surely, 2^445421602 is an apocalyptic number.

445421602 is a deficient number, since it is larger than the sum of its proper divisors (222710804).

445421602 is a wasteful number, since it uses less digits than its factorization.

445421602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222710803.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 445421602 is about 21105.0136697421. The cubic root of 445421602 is about 763.7017020736.

The spelling of 445421602 in words is "four hundred forty-five million, four hundred twenty-one thousand, six hundred two".