40454384 has 10 divisors (see below), whose sum is σ = 78380400. Its totient is φ = 20227184.

The previous prime is 40454377. The next prime is 40454387. The reversal of 40454384 is 48345404.

It is a self number, because there is not a number n which added to its sum of digits gives 40454384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40454387) 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 as a sum of consecutive naturals, namely, 1264184 + ... + 1264215.

It is an arithmetic number, because the mean of its divisors is an integer number (7838040).

Almost surely, 2^40454384 is an apocalyptic number.

It is an amenable number.

40454384 is a deficient number, since it is larger than the sum of its proper divisors (37926016).

40454384 is a wasteful number, since it uses less digits than its factorization.

40454384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528407 (or 2528401 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 40454384 is about 6360.3760895092. The cubic root of 40454384 is about 343.2852927620.

Adding to 40454384 its reverse (48345404), we get a palindrome (88799788).

The spelling of 40454384 in words is "forty million, four hundred fifty-four thousand, three hundred eighty-four".