798261889 has 4 divisors (see below), whose sum is σ = 800158420. Its totient is φ = 796365360.

The previous prime is 798261881. The next prime is 798261931. The reversal of 798261889 is 988162897.

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 75082225 + 723179664 = 8665^2 + 26892^2 .

It is a cyclic number.

It is not a de Polignac number, because 798261889 - 2³ = 798261881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798261881) 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, 947634 + ... + 948475.

It is an arithmetic number, because the mean of its divisors is an integer number (200039605).

Almost surely, 2^798261889 is an apocalyptic number.

It is an amenable number.

798261889 is a deficient number, since it is larger than the sum of its proper divisors (1896531).

798261889 is a wasteful number, since it uses less digits than its factorization.

798261889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896530.

The product of its digits is 3483648, while the sum is 58.

The square root of 798261889 is about 28253.5287884540. The cubic root of 798261889 is about 927.6449795284.

The spelling of 798261889 in words is "seven hundred ninety-eight million, two hundred sixty-one thousand, eight hundred eighty-nine".