836407133 has 4 divisors (see below), whose sum is σ = 836523708. Its totient is φ = 836290560.

The previous prime is 836407127. The next prime is 836407139. The reversal of 836407133 is 331704638.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (836407127) and next prime (836407139).

It can be written as a sum of positive squares in 2 ways, for example, as 485893849 + 350513284 = 22043^2 + 18722^2 .

It is a cyclic number.

It is not a de Polignac number, because 836407133 - 2¹⁴ = 836390749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 836407093 and 836407102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (836407139) 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, 46766 + ... + 62127.

It is an arithmetic number, because the mean of its divisors is an integer number (209130927).

Almost surely, 2^836407133 is an apocalyptic number.

It is an amenable number.

836407133 is a deficient number, since it is larger than the sum of its proper divisors (116575).

836407133 is a wasteful number, since it uses less digits than its factorization.

836407133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116574.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 836407133 is about 28920.7042272487. The cubic root of 836407133 is about 942.1916316997.

The spelling of 836407133 in words is "eight hundred thirty-six million, four hundred seven thousand, one hundred thirty-three".