826104091 has 4 divisors (see below), whose sum is σ = 830668384. Its totient is φ = 821539800.

The previous prime is 826104067. The next prime is 826104107. The reversal of 826104091 is 190401628.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-826104091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (826104011) 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, 2281875 + ... + 2282236.

It is an arithmetic number, because the mean of its divisors is an integer number (207667096).

Almost surely, 2^826104091 is an apocalyptic number.

826104091 is a deficient number, since it is larger than the sum of its proper divisors (4564293).

826104091 is a wasteful number, since it uses less digits than its factorization.

826104091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4564292.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 826104091 is about 28742.0265639012. The cubic root of 826104091 is about 938.3069308778.

The spelling of 826104091 in words is "eight hundred twenty-six million, one hundred four thousand, ninety-one".