10989001 has 2 divisors, whose sum is σ = 10989002. Its totient is φ = 10989000.

The previous prime is 10988993. The next prime is 10989047. The reversal of 10989001 is 10098901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10497600 + 491401 = 3240^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 10989001 - 2³ = 10988993 is a prime.

It is a Chen prime.

It is equal to p₇₂₅₈₄₂ and since 10989001 and 725842 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (10989301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5494500 + 5494501.

It is an arithmetic number, because the mean of its divisors is an integer number (5494501).

Almost surely, 2^10989001 is an apocalyptic number.

It is an amenable number.

10989001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10989001 is an equidigital number, since it uses as much as digits as its factorization.

10989001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 10989001 is about 3314.9662140058. The cubic root of 10989001 is about 222.3238584064.

It can be divided in two parts, 1098900 and 1, that added together give a palindrome (1098901).

The spelling of 10989001 in words is "ten million, nine hundred eighty-nine thousand, one".