841313991 has 32 divisors (see below), whose sum is σ = 1336311808. Its totient is φ = 460689120.

The previous prime is 841313989. The next prime is 841313999. The reversal of 841313991 is 199313148.

It is a happy number.

It is not a de Polignac number, because 841313991 - 2¹ = 841313989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (841313999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60780 + ... + 73326.

It is an arithmetic number, because the mean of its divisors is an integer number (41759744).

Almost surely, 2^841313991 is an apocalyptic number.

841313991 is a deficient number, since it is larger than the sum of its proper divisors (494997817).

841313991 is a wasteful number, since it uses less digits than its factorization.

841313991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12691.

The product of its digits is 23328, while the sum is 39.

The square root of 841313991 is about 29005.4131327240. The cubic root of 841313991 is about 944.0305244696.

The spelling of 841313991 in words is "eight hundred forty-one million, three hundred thirteen thousand, nine hundred ninety-one".