11020989 has 16 divisors (see below), whose sum is σ = 16998912. Its totient is φ = 6220848.

The previous prime is 11020987. The next prime is 11020991. The reversal of 11020989 is 98902011.

11020989 = T₁₇₇₁ + T₁₇₇₂ + ... + T₁₇₇₇.

11020989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11020987) and next prime (11020991).

It is not a de Polignac number, because 11020989 - 2¹ = 11020987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1419 + ... + 4904.

It is an arithmetic number, because the mean of its divisors is an integer number (1062432).

Almost surely, 2^11020989 is an apocalyptic number.

It is an amenable number.

11020989 is a deficient number, since it is larger than the sum of its proper divisors (5977923).

11020989 is an equidigital number, since it uses as much as digits as its factorization.

11020989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6416.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 11020989 is about 3319.7874931989. The cubic root of 11020989 is about 222.5393710576.

The spelling of 11020989 in words is "eleven million, twenty thousand, nine hundred eighty-nine".