745409441 has 4 divisors (see below), whose sum is σ = 851896512. Its totient is φ = 638922372.

The previous prime is 745409419. The next prime is 745409449. The reversal of 745409441 is 144904547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 745409441 - 2¹⁴ = 745393057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745409395 and 745409404.

It is not an unprimeable number, because it can be changed into a prime (745409449) 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, 53243525 + ... + 53243538.

It is an arithmetic number, because the mean of its divisors is an integer number (212974128).

Almost surely, 2^745409441 is an apocalyptic number.

It is an amenable number.

745409441 is a deficient number, since it is larger than the sum of its proper divisors (106487071).

745409441 is a wasteful number, since it uses less digits than its factorization.

745409441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106487070.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 745409441 is about 27302.1874764642. The cubic root of 745409441 is about 906.7028127860.

The spelling of 745409441 in words is "seven hundred forty-five million, four hundred nine thousand, four hundred forty-one".