898354399687 has 4 divisors (see below), whose sum is σ = 898875791080. Its totient is φ = 897833008296.

The previous prime is 898354399639. The next prime is 898354399711. The reversal of 898354399687 is 786993453898.

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

It is a cyclic number.

It is not a de Polignac number, because 898354399687 - 2⁷ = 898354399559 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 (898354391687) 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, 260693112 + ... + 260696557.

It is an arithmetic number, because the mean of its divisors is an integer number (224718947770).

Almost surely, 2^898354399687 is an apocalyptic number.

898354399687 is a deficient number, since it is larger than the sum of its proper divisors (521391393).

898354399687 is a wasteful number, since it uses less digits than its factorization.

898354399687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521391392.

The product of its digits is 2821754880, while the sum is 79.

The spelling of 898354399687 in words is "eight hundred ninety-eight billion, three hundred fifty-four million, three hundred ninety-nine thousand, six hundred eighty-seven".