40634459 has 4 divisors (see below), whose sum is σ = 41945280. Its totient is φ = 39323640.

The previous prime is 40634431. The next prime is 40634467. The reversal of 40634459 is 95443604.

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 40634459 - 2²⁴ = 23857243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40634059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655364 + ... + 655425.

It is an arithmetic number, because the mean of its divisors is an integer number (10486320).

Almost surely, 2^40634459 is an apocalyptic number.

40634459 is a deficient number, since it is larger than the sum of its proper divisors (1310821).

40634459 is a wasteful number, since it uses less digits than its factorization.

40634459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310820.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 40634459 is about 6374.5163738122. The cubic root of 40634459 is about 343.7938952651.

The spelling of 40634459 in words is "forty million, six hundred thirty-four thousand, four hundred fifty-nine".