2089945 has 32 divisors (see below), whose sum is σ = 3064320. Its totient is φ = 1347840.

The previous prime is 2089939. The next prime is 2089951. The reversal of 2089945 is 5499802.

It is an interprime number because it is at equal distance from previous prime (2089939) and next prime (2089951).

It is not a de Polignac number, because 2089945 - 2¹⁵ = 2057177 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26416 + ... + 26494.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^2089945 is an apocalyptic number.

It is an amenable number.

2089945 is a deficient number, since it is larger than the sum of its proper divisors (974375).

2089945 is a wasteful number, since it uses less digits than its factorization.

2089945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 2089945 is about 1445.6642072072. The cubic root of 2089945 is about 127.8532049240.

It can be divided in two parts, 208 and 9945, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 2089945 in words is "two million, eighty-nine thousand, nine hundred forty-five".