745432444 has 24 divisors (see below), whose sum is σ = 1336070736. Its totient is φ = 363792000.

The previous prime is 745432421. The next prime is 745432447. The reversal of 745432444 is 444234547.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745432447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20304 + ... + 43624.

It is an arithmetic number, because the mean of its divisors is an integer number (55669614).

Almost surely, 2^745432444 is an apocalyptic number.

It is an amenable number.

745432444 is a deficient number, since it is larger than the sum of its proper divisors (590638292).

745432444 is a wasteful number, since it uses less digits than its factorization.

745432444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23517 (or 23515 counting only the distinct ones).

The product of its digits is 215040, while the sum is 37.

The square root of 745432444 is about 27302.6087398256. The cubic root of 745432444 is about 906.7121395037.

The spelling of 745432444 in words is "seven hundred forty-five million, four hundred thirty-two thousand, four hundred forty-four".