1349891 has 2 divisors, whose sum is σ = 1349892. Its totient is φ = 1349890.

The previous prime is 1349867. The next prime is 1349897. The reversal of 1349891 is 1989431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1349891 - 2⁶ = 1349827 is a prime.

It is not a weakly prime, because it can be changed into another prime (1349897) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674945 + 674946.

It is an arithmetic number, because the mean of its divisors is an integer number (674946).

2^1349891 is an apocalyptic number.

1349891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1349891 is an equidigital number, since it uses as much as digits as its factorization.

1349891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 1349891 is about 1161.8480967837. The cubic root of 1349891 is about 110.5179703648.

The spelling of 1349891 in words is "one million, three hundred forty-nine thousand, eight hundred ninety-one".