834684421 has 16 divisors (see below), whose sum is σ = 936345600. Its totient is φ = 740261808.

The previous prime is 834684413. The next prime is 834684457. The reversal of 834684421 is 124486438.

It is a happy number.

It is not a de Polignac number, because 834684421 - 2³ = 834684413 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 (834654421) 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, 220 + ... + 40858.

It is an arithmetic number, because the mean of its divisors is an integer number (58521600).

Almost surely, 2^834684421 is an apocalyptic number.

It is an amenable number.

834684421 is a deficient number, since it is larger than the sum of its proper divisors (101661179).

834684421 is a wasteful number, since it uses less digits than its factorization.

834684421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40728.

The product of its digits is 147456, while the sum is 40.

The square root of 834684421 is about 28890.9055067507. The cubic root of 834684421 is about 941.5443231489.

The spelling of 834684421 in words is "eight hundred thirty-four million, six hundred eighty-four thousand, four hundred twenty-one".