834961405391 has 4 divisors (see below), whose sum is σ = 834976187784. Its totient is φ = 834946623000.

The previous prime is 834961405241. The next prime is 834961405409. The reversal of 834961405391 is 193504169438.

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 834961405391 - 2²⁶ = 834894296527 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 (834961425391) 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, 7306145 + ... + 7419546.

It is an arithmetic number, because the mean of its divisors is an integer number (208744046946).

Almost surely, 2^834961405391 is an apocalyptic number.

834961405391 is a deficient number, since it is larger than the sum of its proper divisors (14782393).

834961405391 is a wasteful number, since it uses less digits than its factorization.

834961405391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14782392.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 834961405391 in words is "eight hundred thirty-four billion, nine hundred sixty-one million, four hundred five thousand, three hundred ninety-one".