834721147 has 16 divisors (see below), whose sum is σ = 925701280. Its totient is φ = 747677952.

The previous prime is 834721061. The next prime is 834721163. The reversal of 834721147 is 741127438.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-834721147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (834721177) 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, 194608 + ... + 198850.

It is an arithmetic number, because the mean of its divisors is an integer number (57856330).

Almost surely, 2^834721147 is an apocalyptic number.

834721147 is a deficient number, since it is larger than the sum of its proper divisors (90980133).

834721147 is a wasteful number, since it uses less digits than its factorization.

834721147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702.

The product of its digits is 37632, while the sum is 37.

The square root of 834721147 is about 28891.5410976985. The cubic root of 834721147 is about 941.5581322200.

The spelling of 834721147 in words is "eight hundred thirty-four million, seven hundred twenty-one thousand, one hundred forty-seven".