791439245 has 4 divisors (see below), whose sum is σ = 949727100. Its totient is φ = 633151392.

The previous prime is 791439241. The next prime is 791439247. The reversal of 791439245 is 542934197.

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

It can be written as a sum of positive squares in 2 ways, for example, as 530196676 + 261242569 = 23026^2 + 16163^2 .

It is a cyclic number.

It is not a de Polignac number, because 791439245 - 2² = 791439241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 791439196 and 791439205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791439241) 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 3 ways as a sum of consecutive naturals, for example, 79143920 + ... + 79143929.

It is an arithmetic number, because the mean of its divisors is an integer number (237431775).

Almost surely, 2^791439245 is an apocalyptic number.

It is an amenable number.

791439245 is a deficient number, since it is larger than the sum of its proper divisors (158287855).

791439245 is a wasteful number, since it uses less digits than its factorization.

791439245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158287854.

The product of its digits is 272160, while the sum is 44.

The square root of 791439245 is about 28132.5300142024. The cubic root of 791439245 is about 924.9945926151.

It can be divided in two parts, 79143 and 9245, that added together give a palindrome (88388).

The spelling of 791439245 in words is "seven hundred ninety-one million, four hundred thirty-nine thousand, two hundred forty-five".