12699091 has 2 divisors, whose sum is σ = 12699092. Its totient is φ = 12699090.

The previous prime is 12699079. The next prime is 12699097. The reversal of 12699091 is 19099621.

12699091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (19099621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12699091 - 2⁹ = 12698579 is a prime.

It is a super-2 number, since 2×12699091² = 322533824452562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12699091.

It is not a weakly prime, because it can be changed into another prime (12699097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6349545 + 6349546.

It is an arithmetic number, because the mean of its divisors is an integer number (6349546).

Almost surely, 2^12699091 is an apocalyptic number.

12699091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12699091 is an equidigital number, since it uses as much as digits as its factorization.

12699091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 12699091 is about 3563.5783981835. The cubic root of 12699091 is about 233.3050888715.

The spelling of 12699091 in words is "twelve million, six hundred ninety-nine thousand, ninety-one".