11964409 has 2 divisors, whose sum is σ = 11964410. Its totient is φ = 11964408.

The previous prime is 11964397. The next prime is 11964427. The reversal of 11964409 is 90446911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7952400 + 4012009 = 2820^2 + 2003^2 .

It is a cyclic number.

It is not a de Polignac number, because 11964409 - 2¹⁷ = 11833337 is a prime.

It is not a weakly prime, because it can be changed into another prime (11964809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5982204 + 5982205.

It is an arithmetic number, because the mean of its divisors is an integer number (5982205).

Almost surely, 2^11964409 is an apocalyptic number.

It is an amenable number.

11964409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11964409 is an equidigital number, since it uses as much as digits as its factorization.

11964409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 11964409 is about 3458.9606820547. The cubic root of 11964409 is about 228.7162825675.

The spelling of 11964409 in words is "eleven million, nine hundred sixty-four thousand, four hundred nine".