834806421 has 6 divisors (see below), whose sum is σ = 1205831510. Its totient is φ = 556537608.

The previous prime is 834806387. The next prime is 834806473. The reversal of 834806421 is 124608438.

834806421 is a `hidden beast` number, since 8 + 3 + 4 + 8 + 0 + 642 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 735006321 + 99800100 = 27111^2 + 9990^2 .

It is not a de Polignac number, because 834806421 - 2²⁹ = 297935509 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 (834806221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46378126 + ... + 46378143.

Almost surely, 2^834806421 is an apocalyptic number.

It is an amenable number.

834806421 is a deficient number, since it is larger than the sum of its proper divisors (371025089).

834806421 is a wasteful number, since it uses less digits than its factorization.

834806421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92756275 (or 92756272 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 834806421 is about 28893.0168206783. The cubic root of 834806421 is about 941.5901939029.

The spelling of 834806421 in words is "eight hundred thirty-four million, eight hundred six thousand, four hundred twenty-one".