745891199 has 4 divisors (see below), whose sum is σ = 748104864. Its totient is φ = 743677536.

The previous prime is 745891171. The next prime is 745891231. The reversal of 745891199 is 991198547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745891199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745891199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745891129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106327 + ... + 1107000.

It is an arithmetic number, because the mean of its divisors is an integer number (187026216).

Almost surely, 2^745891199 is an apocalyptic number.

745891199 is a deficient number, since it is larger than the sum of its proper divisors (2213665).

745891199 is a wasteful number, since it uses less digits than its factorization.

745891199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213664.

The product of its digits is 816480, while the sum is 53.

The square root of 745891199 is about 27311.0087510513. The cubic root of 745891199 is about 906.8981046797.

The spelling of 745891199 in words is "seven hundred forty-five million, eight hundred ninety-one thousand, one hundred ninety-nine".