11653949 has 2 divisors, whose sum is σ = 11653950. Its totient is φ = 11653948.

The previous prime is 11653937. The next prime is 11653951. The reversal of 11653949 is 94935611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9424900 + 2229049 = 3070^2 + 1493^2 .

It is a cyclic number.

It is not a de Polignac number, because 11653949 - 2¹² = 11649853 is a prime.

It is a Sophie Germain prime.

Together with 11653951, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11653909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5826974 + 5826975.

It is an arithmetic number, because the mean of its divisors is an integer number (5826975).

Almost surely, 2^11653949 is an apocalyptic number.

It is an amenable number.

11653949 is a deficient number, since it is larger than the sum of its proper divisors (1).

11653949 is an equidigital number, since it uses as much as digits as its factorization.

11653949 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 11653949 is about 3413.7880719225. The cubic root of 11653949 is about 226.7206289727.

The spelling of 11653949 in words is "eleven million, six hundred fifty-three thousand, nine hundred forty-nine".