798416391 has 4 divisors (see below), whose sum is σ = 1064555192. Its totient is φ = 532277592.

The previous prime is 798416387. The next prime is 798416449. The reversal of 798416391 is 193614897.

It is a happy number.

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

It is not a de Polignac number, because 798416391 - 2² = 798416387 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 798416391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798416321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133069396 + ... + 133069401.

It is an arithmetic number, because the mean of its divisors is an integer number (266138798).

Almost surely, 2^798416391 is an apocalyptic number.

798416391 is a deficient number, since it is larger than the sum of its proper divisors (266138801).

798416391 is a wasteful number, since it uses less digits than its factorization.

798416391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266138800.

The product of its digits is 326592, while the sum is 48.

The square root of 798416391 is about 28256.2628633017. The cubic root of 798416391 is about 927.7048236143.

The spelling of 798416391 in words is "seven hundred ninety-eight million, four hundred sixteen thousand, three hundred ninety-one".