11953649 has 2 divisors, whose sum is σ = 11953650. Its totient is φ = 11953648.

The previous prime is 11953607. The next prime is 11953657. The reversal of 11953649 is 94635911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10608049 + 1345600 = 3257^2 + 1160^2 .

It is an emirp because it is prime and its reverse (94635911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11953649 - 2⁸ = 11953393 is a prime.

It is not a weakly prime, because it can be changed into another prime (11953349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5976824 + 5976825.

It is an arithmetic number, because the mean of its divisors is an integer number (5976825).

Almost surely, 2^11953649 is an apocalyptic number.

It is an amenable number.

11953649 is a deficient number, since it is larger than the sum of its proper divisors (1).

11953649 is an equidigital number, since it uses as much as digits as its factorization.

11953649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 38.

The square root of 11953649 is about 3457.4049516943. The cubic root of 11953649 is about 228.6476978922.

The spelling of 11953649 in words is "eleven million, nine hundred fifty-three thousand, six hundred forty-nine".