13803961 has 2 divisors, whose sum is σ = 13803962. Its totient is φ = 13803960.

The previous prime is 13803953. The next prime is 13803991. The reversal of 13803961 is 16930831.

13803961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7952400 + 5851561 = 2820^2 + 2419^2 .

It is a cyclic number.

It is not a de Polignac number, because 13803961 - 2³ = 13803953 is a prime.

It is not a weakly prime, because it can be changed into another prime (13803931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6901980 + 6901981.

It is an arithmetic number, because the mean of its divisors is an integer number (6901981).

Almost surely, 2^13803961 is an apocalyptic number.

It is an amenable number.

13803961 is a deficient number, since it is larger than the sum of its proper divisors (1).

13803961 is an equidigital number, since it uses as much as digits as its factorization.

13803961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 13803961 is about 3715.3682186292. The cubic root of 13803961 is about 239.8839774854.

The spelling of 13803961 in words is "thirteen million, eight hundred three thousand, nine hundred sixty-one".