791272838 has 4 divisors (see below), whose sum is σ = 1186909260. Its totient is φ = 395636418.

The previous prime is 791272829. The next prime is 791272873. The reversal of 791272838 is 838272197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 838272197 = 7 ⋅119753171.

It is a super-2 number, since 2×791272838² = 1252225408313148488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 791272792 and 791272801.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 197818208 + ... + 197818211.

It is an arithmetic number, because the mean of its divisors is an integer number (296727315).

Almost surely, 2^791272838 is an apocalyptic number.

791272838 is a deficient number, since it is larger than the sum of its proper divisors (395636422).

791272838 is a wasteful number, since it uses less digits than its factorization.

791272838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395636421.

The product of its digits is 338688, while the sum is 47.

The square root of 791272838 is about 28129.5723038940. The cubic root of 791272838 is about 924.9297586789.

The spelling of 791272838 in words is "seven hundred ninety-one million, two hundred seventy-two thousand, eight hundred thirty-eight".