791249345 has 4 divisors (see below), whose sum is σ = 949499220. Its totient is φ = 632999472.

The previous prime is 791249341. The next prime is 791249401. The reversal of 791249345 is 543942197.

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 368371249 + 422878096 = 19193^2 + 20564^2 .

It is a cyclic number.

It is not a de Polignac number, because 791249345 - 2² = 791249341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 791249296 and 791249305.

It is not an unprimeable number, because it can be changed into a prime (791249341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79124930 + ... + 79124939.

It is an arithmetic number, because the mean of its divisors is an integer number (237374805).

Almost surely, 2^791249345 is an apocalyptic number.

It is an amenable number.

791249345 is a deficient number, since it is larger than the sum of its proper divisors (158249875).

791249345 is a wasteful number, since it uses less digits than its factorization.

791249345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158249874.

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

The square root of 791249345 is about 28129.1547153483. The cubic root of 791249345 is about 924.9206048242.

The spelling of 791249345 in words is "seven hundred ninety-one million, two hundred forty-nine thousand, three hundred forty-five".