10961389 has 2 divisors, whose sum is σ = 10961390. Its totient is φ = 10961388.

The previous prime is 10961381. The next prime is 10961393. The reversal of 10961389 is 98316901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6165289 + 4796100 = 2483^2 + 2190^2 .

It is an emirp because it is prime and its reverse (98316901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10961389 - 2³ = 10961381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10961381) 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, 5480694 + 5480695.

It is an arithmetic number, because the mean of its divisors is an integer number (5480695).

Almost surely, 2^10961389 is an apocalyptic number.

It is an amenable number.

10961389 is a deficient number, since it is larger than the sum of its proper divisors (1).

10961389 is an equidigital number, since it uses as much as digits as its factorization.

10961389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 10961389 is about 3310.7988462001. The cubic root of 10961389 is about 222.1374915955.

It can be divided in two parts, 1096 and 1389, that added together give a triangular number (2485 = T₇₀).

The spelling of 10961389 in words is "ten million, nine hundred sixty-one thousand, three hundred eighty-nine".