745021444 has 12 divisors (see below), whose sum is σ = 1303981084. Its totient is φ = 372455424.

The previous prime is 745021439. The next prime is 745021469. The reversal of 745021444 is 444120547.

It can be written as a sum of positive squares in 2 ways, for example, as 83503044 + 661518400 = 9138^2 + 25720^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38452 + ... + 54484.

Almost surely, 2^745021444 is an apocalyptic number.

It is an amenable number.

745021444 is a deficient number, since it is larger than the sum of its proper divisors (558959640).

745021444 is a wasteful number, since it uses less digits than its factorization.

745021444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27654 (or 27652 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 745021444 is about 27295.0809487717. The cubic root of 745021444 is about 906.5454679282.

The spelling of 745021444 in words is "seven hundred forty-five million, twenty-one thousand, four hundred forty-four".