412887691 has 2 divisors, whose sum is σ = 412887692. Its totient is φ = 412887690.

The previous prime is 412887647. The next prime is 412887779. The reversal of 412887691 is 196788214.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-412887691 is a prime.

It is a super-2 number, since 2×412887691² = 340952490758622962, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (412887491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206443845 + 206443846.

It is an arithmetic number, because the mean of its divisors is an integer number (206443846).

Almost surely, 2^412887691 is an apocalyptic number.

412887691 is a deficient number, since it is larger than the sum of its proper divisors (1).

412887691 is an equidigital number, since it uses as much as digits as its factorization.

412887691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 46.

The square root of 412887691 is about 20319.6380627215. The cubic root of 412887691 is about 744.6359141660.

It can be divided in two parts, 4128 and 87691, that added together give a palindrome (91819).

The spelling of 412887691 in words is "four hundred twelve million, eight hundred eighty-seven thousand, six hundred ninety-one".