40823489 has 4 divisors (see below), whose sum is σ = 46655424. Its totient is φ = 34991556.

The previous prime is 40823483. The next prime is 40823491. The reversal of 40823489 is 98432804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40823489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40823483) 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, 2915957 + ... + 2915970.

It is an arithmetic number, because the mean of its divisors is an integer number (11663856).

Almost surely, 2^40823489 is an apocalyptic number.

It is an amenable number.

40823489 is a deficient number, since it is larger than the sum of its proper divisors (5831935).

40823489 is an equidigital number, since it uses as much as digits as its factorization.

40823489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5831934.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 40823489 is about 6389.3261773054. The cubic root of 40823489 is about 344.3261762266.

The spelling of 40823489 in words is "forty million, eight hundred twenty-three thousand, four hundred eighty-nine".