834572609 has 8 divisors (see below), whose sum is σ = 915729192. Its totient is φ = 755838720.

The previous prime is 834572603. The next prime is 834572623. The reversal of 834572609 is 906275438.

It can be written as a sum of positive squares in 4 ways, for example, as 30283009 + 804289600 = 5503^2 + 28360^2 .

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

It is not a de Polignac number, because 834572609 - 2¹² = 834568513 is a prime.

It is a super-2 number, since 2×834572609² = 1393022879386133762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 834572609.

It is not an unprimeable number, because it can be changed into a prime (834572603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604952 + ... + 606329.

It is an arithmetic number, because the mean of its divisors is an integer number (114466149).

Almost surely, 2^834572609 is an apocalyptic number.

It is an amenable number.

834572609 is a deficient number, since it is larger than the sum of its proper divisors (81156583).

834572609 is a wasteful number, since it uses less digits than its factorization.

834572609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211347.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 834572609 is about 28888.9703693295. The cubic root of 834572609 is about 941.5022790532.

The spelling of 834572609 in words is "eight hundred thirty-four million, five hundred seventy-two thousand, six hundred nine".