40405424247 has 12 divisors (see below), whose sum is σ = 59720679304. Its totient is φ = 26310508560.

The previous prime is 40405424231. The next prime is 40405424249. The reversal of 40405424247 is 74242450404.

40405424247 is a `hidden beast` number, since 4 + 0 + 405 + 4 + 2 + 4 + 247 = 666.

It is not a de Polignac number, because 40405424247 - 2⁴ = 40405424231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40405424249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52203004 + ... + 52203777.

Almost surely, 2^40405424247 is an apocalyptic number.

40405424247 is a deficient number, since it is larger than the sum of its proper divisors (19315255057).

40405424247 is a wasteful number, since it uses less digits than its factorization.

40405424247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104406830 (or 104406827 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 36.

The spelling of 40405424247 in words is "forty billion, four hundred five million, four hundred twenty-four thousand, two hundred forty-seven".