445403540 has 12 divisors (see below), whose sum is σ = 935347476. Its totient is φ = 178161408.

The previous prime is 445403479. The next prime is 445403549. The reversal of 445403540 is 45304544.

It can be written as a sum of positive squares in 2 ways, for example, as 128777104 + 316626436 = 11348^2 + 17794^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445403549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11135069 + ... + 11135108.

It is an arithmetic number, because the mean of its divisors is an integer number (77945623).

Almost surely, 2^445403540 is an apocalyptic number.

It is an amenable number.

445403540 is an abundant number, since it is smaller than the sum of its proper divisors (489943936).

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

445403540 is a wasteful number, since it uses less digits than its factorization.

445403540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22270186 (or 22270184 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 445403540 is about 21104.5857576025. The cubic root of 445403540 is about 763.6913791447.

The spelling of 445403540 in words is "four hundred forty-five million, four hundred three thousand, five hundred forty".