1408966891 has 2 divisors, whose sum is σ = 1408966892. Its totient is φ = 1408966890.

The previous prime is 1408966879. The next prime is 1408966931. The reversal of 1408966891 is 1986698041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1408966891 - 2⁹ = 1408966379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1408966291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704483445 + 704483446.

It is an arithmetic number, because the mean of its divisors is an integer number (704483446).

Almost surely, 2^1408966891 is an apocalyptic number.

1408966891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1408966891 is an equidigital number, since it uses as much as digits as its factorization.

1408966891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 1408966891 is about 37536.2077333340. The cubic root of 1408966891 is about 1121.0722328952.

The spelling of 1408966891 in words is "one billion, four hundred eight million, nine hundred sixty-six thousand, eight hundred ninety-one".