40424433289 has 2 divisors, whose sum is σ = 40424433290. Its totient is φ = 40424433288.

The previous prime is 40424433281. The next prime is 40424433299. The reversal of 40424433289 is 98233442404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37632896064 + 2791537225 = 193992^2 + 52835^2 .

It is a cyclic number.

It is not a de Polignac number, because 40424433289 - 2³ = 40424433281 is a prime.

It is a super-2 number, since 2×40424433289² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40424433281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20212216644 + 20212216645.

It is an arithmetic number, because the mean of its divisors is an integer number (20212216645).

Almost surely, 2^40424433289 is an apocalyptic number.

It is an amenable number.

40424433289 is a deficient number, since it is larger than the sum of its proper divisors (1).

40424433289 is an equidigital number, since it uses as much as digits as its factorization.

40424433289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 43.

The spelling of 40424433289 in words is "forty billion, four hundred twenty-four million, four hundred thirty-three thousand, two hundred eighty-nine".