10985389 has 2 divisors, whose sum is σ = 10985390. Its totient is φ = 10985388.

The previous prime is 10985353. The next prime is 10985407. The reversal of 10985389 is 98358901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5616900 + 5368489 = 2370^2 + 2317^2 .

It is a cyclic number.

It is not a de Polignac number, because 10985389 - 2¹⁵ = 10952621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10985489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5492694 + 5492695.

It is an arithmetic number, because the mean of its divisors is an integer number (5492695).

Almost surely, 2^10985389 is an apocalyptic number.

It is an amenable number.

10985389 is a deficient number, since it is larger than the sum of its proper divisors (1).

10985389 is an equidigital number, since it uses as much as digits as its factorization.

10985389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 10985389 is about 3314.4213672978. The cubic root of 10985389 is about 222.2994970238.

The spelling of 10985389 in words is "ten million, nine hundred eighty-five thousand, three hundred eighty-nine".