836990849 has 2 divisors, whose sum is σ = 836990850. Its totient is φ = 836990848.

The previous prime is 836990827. The next prime is 836990857. The reversal of 836990849 is 948099638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 594628225 + 242362624 = 24385^2 + 15568^2 .

It is a cyclic number.

It is not a de Polignac number, because 836990849 - 2¹² = 836986753 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 836990794 and 836990803.

It is not a weakly prime, because it can be changed into another prime (836990809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 418495424 + 418495425.

It is an arithmetic number, because the mean of its divisors is an integer number (418495425).

Almost surely, 2^836990849 is an apocalyptic number.

It is an amenable number.

836990849 is a deficient number, since it is larger than the sum of its proper divisors (1).

836990849 is an equidigital number, since it uses as much as digits as its factorization.

836990849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The square root of 836990849 is about 28930.7941301306. The cubic root of 836990849 is about 942.4107612038.

The spelling of 836990849 in words is "eight hundred thirty-six million, nine hundred ninety thousand, eight hundred forty-nine".