968611409 has 2 divisors, whose sum is σ = 968611410. Its totient is φ = 968611408.

The previous prime is 968611403. The next prime is 968611433. The reversal of 968611409 is 904116869.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 565726225 + 402885184 = 23785^2 + 20072^2 .

It is an emirp because it is prime and its reverse (904116869) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 968611409 - 2¹² = 968607313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 968611409.

It is not a weakly prime, because it can be changed into another prime (968611403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484305704 + 484305705.

It is an arithmetic number, because the mean of its divisors is an integer number (484305705).

Almost surely, 2^968611409 is an apocalyptic number.

It is an amenable number.

968611409 is a deficient number, since it is larger than the sum of its proper divisors (1).

968611409 is an equidigital number, since it uses as much as digits as its factorization.

968611409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 968611409 is about 31122.5225359385. The cubic root of 968611409 is about 989.4257149521.

The spelling of 968611409 in words is "nine hundred sixty-eight million, six hundred eleven thousand, four hundred nine".