798891431 has 8 divisors (see below), whose sum is σ = 860573280. Its totient is φ = 737242272.

The previous prime is 798891409. The next prime is 798891433. The reversal of 798891431 is 134198897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-798891431 is a prime.

It is a super-2 number, since 2×798891431² = 1276455037050455522, which contains 22 as substring.

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 798891431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798891433) 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 7 ways as a sum of consecutive naturals, for example, 71201 + ... + 81653.

It is an arithmetic number, because the mean of its divisors is an integer number (107571660).

Almost surely, 2^798891431 is an apocalyptic number.

798891431 is a deficient number, since it is larger than the sum of its proper divisors (61681849).

798891431 is a wasteful number, since it uses less digits than its factorization.

798891431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16345.

The product of its digits is 435456, while the sum is 50.

The square root of 798891431 is about 28264.6675374044. The cubic root of 798891431 is about 927.8887750510. Note that the first 3 decimals are identical.

The spelling of 798891431 in words is "seven hundred ninety-eight million, eight hundred ninety-one thousand, four hundred thirty-one".