1329091 has 2 divisors, whose sum is σ = 1329092. Its totient is φ = 1329090.

The previous prime is 1329073. The next prime is 1329103. The reversal of 1329091 is 1909231.

It is a strong prime.

It is an emirp because it is prime and its reverse (1909231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1329091 - 2¹¹ = 1327043 is a prime.

1329091 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1329011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664545 + 664546.

It is an arithmetic number, because the mean of its divisors is an integer number (664546).

2^1329091 is an apocalyptic number.

1329091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329091 is an equidigital number, since it uses as much as digits as its factorization.

1329091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1329091 is about 1152.8620906249. The cubic root of 1329091 is about 109.9473853059.

The spelling of 1329091 in words is "one million, three hundred twenty-nine thousand, ninety-one".