859498797 has 4 divisors (see below), whose sum is σ = 1145998400. Its totient is φ = 572999196.

The previous prime is 859498769. The next prime is 859498817. The reversal of 859498797 is 797894958.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 859498797 - 2¹⁹ = 858974509 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 (859498727) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 143249797 + ... + 143249802.

It is an arithmetic number, because the mean of its divisors is an integer number (286499600).

Almost surely, 2^859498797 is an apocalyptic number.

It is an amenable number.

859498797 is a deficient number, since it is larger than the sum of its proper divisors (286499603).

859498797 is a wasteful number, since it uses less digits than its factorization.

859498797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286499602.

The product of its digits is 45722880, while the sum is 66.

The square root of 859498797 is about 29317.2099115861. The cubic root of 859498797 is about 950.7837657601.

The spelling of 859498797 in words is "eight hundred fifty-nine million, four hundred ninety-eight thousand, seven hundred ninety-seven".