40408254 has 16 divisors (see below), whose sum is σ = 89796240. Its totient is φ = 13469400.

The previous prime is 40408253. The next prime is 40408279. The reversal of 40408254 is 45280404.

40408254 is a `hidden beast` number, since 4 + 0 + 408 + 254 = 666.

40408254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40408253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374097 + ... + 374204.

It is an arithmetic number, because the mean of its divisors is an integer number (5612265).

Almost surely, 2^40408254 is an apocalyptic number.

40408254 is an abundant number, since it is smaller than the sum of its proper divisors (49387986).

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

40408254 is a wasteful number, since it uses less digits than its factorization.

40408254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748312 (or 748306 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 40408254 is about 6356.7486972508. The cubic root of 40408254 is about 343.1547607738.

Adding to 40408254 its reverse (45280404), we get a palindrome (85688658).

The spelling of 40408254 in words is "forty million, four hundred eight thousand, two hundred fifty-four".