40863289 has 4 divisors (see below), whose sum is σ = 40876660. Its totient is φ = 40849920.

The previous prime is 40863271. The next prime is 40863299. The reversal of 40863289 is 98236804.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 984064 + 39879225 = 992^2 + 6315^2 .

It is a cyclic number.

It is not a de Polignac number, because 40863289 - 2⁷ = 40863161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40863259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409 + ... + 9049.

It is an arithmetic number, because the mean of its divisors is an integer number (10219165).

Almost surely, 2^40863289 is an apocalyptic number.

It is an amenable number.

40863289 is a deficient number, since it is larger than the sum of its proper divisors (13371).

40863289 is an equidigital number, since it uses as much as digits as its factorization.

40863289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13370.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 40863289 is about 6392.4399879858. The cubic root of 40863289 is about 344.4380377311.

The spelling of 40863289 in words is "forty million, eight hundred sixty-three thousand, two hundred eighty-nine".