11953961 has 2 divisors, whose sum is σ = 11953962. Its totient is φ = 11953960.

The previous prime is 11953937. The next prime is 11953967. The reversal of 11953961 is 16935911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9610000 + 2343961 = 3100^2 + 1531^2 .

It is a cyclic number.

It is not a de Polignac number, because 11953961 - 2⁶ = 11953897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11953967) 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, 5976980 + 5976981.

It is an arithmetic number, because the mean of its divisors is an integer number (5976981).

Almost surely, 2^11953961 is an apocalyptic number.

It is an amenable number.

11953961 is a deficient number, since it is larger than the sum of its proper divisors (1).

11953961 is an equidigital number, since it uses as much as digits as its factorization.

11953961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 35.

The square root of 11953961 is about 3457.4500719461. The cubic root of 11953961 is about 228.6496871721.

The spelling of 11953961 in words is "eleven million, nine hundred fifty-three thousand, nine hundred sixty-one".