40684499 has 4 divisors (see below), whose sum is σ = 41351520. Its totient is φ = 40017480.

The previous prime is 40684489. The next prime is 40684507. The reversal of 40684499 is 99448604.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40684499 - 2¹² = 40680403 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (40684429) 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, 333419 + ... + 333540.

It is an arithmetic number, because the mean of its divisors is an integer number (10337880).

Almost surely, 2^40684499 is an apocalyptic number.

40684499 is a deficient number, since it is larger than the sum of its proper divisors (667021).

40684499 is an equidigital number, since it uses as much as digits as its factorization.

40684499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667020.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 40684499 is about 6378.4401698221. The cubic root of 40684499 is about 343.9349610004.

The spelling of 40684499 in words is "forty million, six hundred eighty-four thousand, four hundred ninety-nine".