745636439 has 8 divisors (see below), whose sum is σ = 797316048. Its totient is φ = 694825600.

The previous prime is 745636433. The next prime is 745636457. The reversal of 745636439 is 934636547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 745636439 - 2⁸ = 745636183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 745636393 and 745636402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745636433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215417 + ... + 218850.

It is an arithmetic number, because the mean of its divisors is an integer number (99664506).

Almost surely, 2^745636439 is an apocalyptic number.

745636439 is a deficient number, since it is larger than the sum of its proper divisors (51679609).

745636439 is a wasteful number, since it uses less digits than its factorization.

745636439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434385.

The product of its digits is 1632960, while the sum is 47.

The square root of 745636439 is about 27306.3442994481. The cubic root of 745636439 is about 906.7948422241.

The spelling of 745636439 in words is "seven hundred forty-five million, six hundred thirty-six thousand, four hundred thirty-nine".