40478454 has 28 divisors (see below), whose sum is σ = 91038156. Its totient is φ = 13492332.

The previous prime is 40478447. The next prime is 40478489. The reversal of 40478454 is 45487404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 12424 + ... + 15339.

Almost surely, 2^40478454 is an apocalyptic number.

40478454 is an abundant number, since it is smaller than the sum of its proper divisors (50559702).

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

40478454 is an equidigital number, since it uses as much as digits as its factorization.

40478454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27783 (or 27768 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 40478454 is about 6362.2679918406. The cubic root of 40478454 is about 343.3533631657.

The spelling of 40478454 in words is "forty million, four hundred seventy-eight thousand, four hundred fifty-four".