1246891 has 2 divisors, whose sum is σ = 1246892. Its totient is φ = 1246890.

The previous prime is 1246879. The next prime is 1246907. The reversal of 1246891 is 1986421.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1986421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1246891 - 2⁹ = 1246379 is a prime.

It is a super-3 number, since 3×1246891³ = 5815763338507577913, which contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1246841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623445 + 623446.

It is an arithmetic number, because the mean of its divisors is an integer number (623446).

2^1246891 is an apocalyptic number.

1246891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1246891 is an equidigital number, since it uses as much as digits as its factorization.

1246891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 1246891 is about 1116.6427360620. The cubic root of 1246891 is about 107.6323518571.

The spelling of 1246891 in words is "one million, two hundred forty-six thousand, eight hundred ninety-one".