2091412979 has 2 divisors, whose sum is σ = 2091412980. Its totient is φ = 2091412978.

The previous prime is 2091412969. The next prime is 2091413029. The reversal of 2091412979 is 9792141902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2091412979 - 2²⁰ = 2090364403 is a prime.

It is not a weakly prime, because it can be changed into another prime (2091412919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045706489 + 1045706490.

It is an arithmetic number, because the mean of its divisors is an integer number (1045706490).

Almost surely, 2^2091412979 is an apocalyptic number.

2091412979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091412979 is an equidigital number, since it uses as much as digits as its factorization.

2091412979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 2091412979 is about 45731.9688948552. The cubic root of 2091412979 is about 1278.8313264837.

The spelling of 2091412979 in words is "two billion, ninety-one million, four hundred twelve thousand, nine hundred seventy-nine".