40040454 has 8 divisors (see below), whose sum is σ = 80080920. Its totient is φ = 13346816.

The previous prime is 40040411. The next prime is 40040471. The reversal of 40040454 is 45404004.

It is a sphenic number, since it is the product of 3 distinct primes.

40040454 is an admirable number.

It is a super-2 number, since 2×40040454² = 3206475913052232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40040454.

It is a congruent number.

It is an unprimeable number.

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, 3336699 + ... + 3336710.

It is an arithmetic number, because the mean of its divisors is an integer number (10010115).

Almost surely, 2^40040454 is an apocalyptic number.

40040454 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40040454 is a wasteful number, since it uses less digits than its factorization.

40040454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673414.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 40040454 is about 6327.7526816398. The cubic root of 40040454 is about 342.1104427685.

Adding to 40040454 its reverse (45404004), we get a palindrome (85444458).

The spelling of 40040454 in words is "forty million, forty thousand, four hundred fifty-four".