40420304447 has 2 divisors, whose sum is σ = 40420304448. Its totient is φ = 40420304446.

The previous prime is 40420304411. The next prime is 40420304453. The reversal of 40420304447 is 74440302404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40420304447 - 2²⁰ = 40419255871 is a prime.

It is a super-3 number, since 3×40420304447³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40420304497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20210152223 + 20210152224.

It is an arithmetic number, because the mean of its divisors is an integer number (20210152224).

Almost surely, 2^40420304447 is an apocalyptic number.

40420304447 is a deficient number, since it is larger than the sum of its proper divisors (1).

40420304447 is an equidigital number, since it uses as much as digits as its factorization.

40420304447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 32.

The spelling of 40420304447 in words is "forty billion, four hundred twenty million, three hundred four thousand, four hundred forty-seven".