40217478447 has 16 divisors (see below), whose sum is σ = 53893002240. Its totient is φ = 26677053792.

The previous prime is 40217478401. The next prime is 40217478479. The reversal of 40217478447 is 74487471204.

It is a happy number.

It is not a de Polignac number, because 40217478447 - 2⁶ = 40217478383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40217478396 and 40217478405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40217478047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623338 + ... + 684824.

It is an arithmetic number, because the mean of its divisors is an integer number (3368312640).

Almost surely, 2^40217478447 is an apocalyptic number.

40217478447 is a deficient number, since it is larger than the sum of its proper divisors (13675523793).

40217478447 is a wasteful number, since it uses less digits than its factorization.

40217478447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62582.

The product of its (nonzero) digits is 1404928, while the sum is 48.

The spelling of 40217478447 in words is "forty billion, two hundred seventeen million, four hundred seventy-eight thousand, four hundred forty-seven".