40012439029 has 2 divisors, whose sum is σ = 40012439030. Its totient is φ = 40012439028.

The previous prime is 40012439023. The next prime is 40012439059. The reversal of 40012439029 is 92093421004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33781704804 + 6230734225 = 183798^2 + 78935^2 .

It is a cyclic number.

It is not a de Polignac number, because 40012439029 - 2³ = 40012439021 is a prime.

It is a super-3 number, since 3×40012439029³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40012438985 and 40012439003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40012439021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20006219514 + 20006219515.

It is an arithmetic number, because the mean of its divisors is an integer number (20006219515).

Almost surely, 2^40012439029 is an apocalyptic number.

It is an amenable number.

40012439029 is a deficient number, since it is larger than the sum of its proper divisors (1).

40012439029 is an equidigital number, since it uses as much as digits as its factorization.

40012439029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 40012439029 in words is "forty billion, twelve million, four hundred thirty-nine thousand, twenty-nine".