745453449 has 20 divisors (see below), whose sum is σ = 1199240196. Its totient is φ = 458739936.

The previous prime is 745453447. The next prime is 745453453. The reversal of 745453449 is 944354547.

745453449 is a `hidden beast` number, since 74 + 5 + 4 + 534 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 343731600 + 401721849 = 18540^2 + 20043^2 .

It is not a de Polignac number, because 745453449 - 2¹ = 745453447 is a prime.

It is a super-3 number, since 3×745453449³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (745453447) 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 19 ways as a sum of consecutive naturals, for example, 352914 + ... + 355019.

Almost surely, 2^745453449 is an apocalyptic number.

It is an amenable number.

745453449 is a deficient number, since it is larger than the sum of its proper divisors (453786747).

745453449 is a wasteful number, since it uses less digits than its factorization.

745453449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707958 (or 707949 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The square root of 745453449 is about 27302.9934073171. The cubic root of 745453449 is about 906.7206559516.

The spelling of 745453449 in words is "seven hundred forty-five million, four hundred fifty-three thousand, four hundred forty-nine".