445621422 has 32 divisors (see below), whose sum is σ = 907972992. Its totient is φ = 145769184.

The previous prime is 445621399. The next prime is 445621433. The reversal of 445621422 is 224126544.

It is a self number, because there is not a number n which added to its sum of digits gives 445621422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111808 + ... + 115724.

It is an arithmetic number, because the mean of its divisors is an integer number (28374156).

Almost surely, 2^445621422 is an apocalyptic number.

445621422 is an abundant number, since it is smaller than the sum of its proper divisors (462351570).

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

445621422 is a wasteful number, since it uses less digits than its factorization.

445621422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272.

The product of its digits is 15360, while the sum is 30.

The square root of 445621422 is about 21109.7470851737. The cubic root of 445621422 is about 763.8158860732.

Adding to 445621422 its reverse (224126544), we get a palindrome (669747966).

It can be divided in two parts, 4456 and 21422, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 445621422 in words is "four hundred forty-five million, six hundred twenty-one thousand, four hundred twenty-two".