10989487 has 4 divisors (see below), whose sum is σ = 11014960. Its totient is φ = 10964016.

The previous prime is 10989443. The next prime is 10989499. The reversal of 10989487 is 78498901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10989487 - 2¹¹ = 10987439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10989427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12078 + ... + 12955.

It is an arithmetic number, because the mean of its divisors is an integer number (2753740).

Almost surely, 2^10989487 is an apocalyptic number.

10989487 is a deficient number, since it is larger than the sum of its proper divisors (25473).

10989487 is an equidigital number, since it uses as much as digits as its factorization.

10989487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25472.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 10989487 is about 3315.0395171099. The cubic root of 10989487 is about 222.3271358594.

It can be divided in two parts, 10989 and 487, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 10989487 in words is "ten million, nine hundred eighty-nine thousand, four hundred eighty-seven".