10989403 has 2 divisors, whose sum is σ = 10989404. Its totient is φ = 10989402.

The previous prime is 10989401. The next prime is 10989409. The reversal of 10989403 is 30498901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10989403 - 2¹ = 10989401 is a prime.

Together with 10989401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10989401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5494701 + 5494702.

It is an arithmetic number, because the mean of its divisors is an integer number (5494702).

Almost surely, 2^10989403 is an apocalyptic number.

10989403 is a deficient number, since it is larger than the sum of its proper divisors (1).

10989403 is an equidigital number, since it uses as much as digits as its factorization.

10989403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 10989403 is about 3315.0268475534. The cubic root of 10989403 is about 222.3265693930.

It can be divided in two parts, 1098 and 9403, that added together give a palindrome (10501).

The spelling of 10989403 in words is "ten million, nine hundred eighty-nine thousand, four hundred three".