434835395821 has 8 divisors (see below), whose sum is σ = 436494093920. Its totient is φ = 433177337808.

The previous prime is 434835395807. The next prime is 434835395867. The reversal of 434835395821 is 128593538434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 434835395821 - 2¹³ = 434835387629 is a prime.

It is the 659421-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434835395521) by changing a digit.

It is a nontrivial repunit in base 659420.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1224010 + ... + 1538788.

It is an arithmetic number, because the mean of its divisors is an integer number (54561761740).

Almost surely, 2^434835395821 is an apocalyptic number.

It is an amenable number.

434835395821 is a deficient number, since it is larger than the sum of its proper divisors (1658698099).

434835395821 is a wasteful number, since it uses less digits than its factorization.

434835395821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320043.

The product of its digits is 12441600, while the sum is 55.

The spelling of 434835395821 in words is "four hundred thirty-four billion, eight hundred thirty-five million, three hundred ninety-five thousand, eight hundred twenty-one".