849598421 has 4 divisors (see below), whose sum is σ = 970969632. Its totient is φ = 728227212.

The previous prime is 849598417. The next prime is 849598439. The reversal of 849598421 is 124895948.

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 a cyclic number.

It is not a de Polignac number, because 849598421 - 2² = 849598417 is a prime.

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 849598421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849598411) 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, 60685595 + ... + 60685608.

It is an arithmetic number, because the mean of its divisors is an integer number (242742408).

Almost surely, 2^849598421 is an apocalyptic number.

It is an amenable number.

849598421 is a deficient number, since it is larger than the sum of its proper divisors (121371211).

849598421 is a wasteful number, since it uses less digits than its factorization.

849598421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121371210.

The product of its digits is 829440, while the sum is 50.

The square root of 849598421 is about 29147.8716375656. The cubic root of 849598421 is about 947.1190360276.

The spelling of 849598421 in words is "eight hundred forty-nine million, five hundred ninety-eight thousand, four hundred twenty-one".