40285089 has 48 divisors (see below), whose sum is σ = 67092480. Its totient is φ = 23103360.

The previous prime is 40285081. The next prime is 40285093. The reversal of 40285089 is 98058204.

40285089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40285089 - 2³ = 40285081 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40285081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104992 + ... + 105374.

It is an arithmetic number, because the mean of its divisors is an integer number (1397760).

Almost surely, 2^40285089 is an apocalyptic number.

40285089 is the 3393-rd nonagonal number.

It is an amenable number.

40285089 is a deficient number, since it is larger than the sum of its proper divisors (26807391).

40285089 is a wasteful number, since it uses less digits than its factorization.

40285089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 40285089 is about 6347.0535683890. The cubic root of 40285089 is about 342.8057588917.

It can be divided in two parts, 402 and 85089, that added together give a triangular number (85491 = T₄₁₃).

The spelling of 40285089 in words is "forty million, two hundred eighty-five thousand, eighty-nine".