798841991 has 16 divisors (see below), whose sum is σ = 830850048. Its totient is φ = 767524800.

The previous prime is 798841969. The next prime is 798842021. The reversal of 798841991 is 199148897.

It is a cyclic number.

It is not a de Polignac number, because 798841991 - 2¹⁰ = 798840967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798841891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925226 + ... + 926088.

It is an arithmetic number, because the mean of its divisors is an integer number (51928128).

Almost surely, 2^798841991 is an apocalyptic number.

798841991 is a deficient number, since it is larger than the sum of its proper divisors (32008057).

798841991 is a wasteful number, since it uses less digits than its factorization.

798841991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222.

The product of its digits is 1306368, while the sum is 56.

The square root of 798841991 is about 28263.7929337165. The cubic root of 798841991 is about 927.8696336234.

The spelling of 798841991 in words is "seven hundred ninety-eight million, eight hundred forty-one thousand, nine hundred ninety-one".