2440129997 has 2 divisors, whose sum is σ = 2440129998. Its totient is φ = 2440129996.

The previous prime is 2440129957. The next prime is 2440130027. The reversal of 2440129997 is 7999210442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2348468521 + 91661476 = 48461^2 + 9574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2440129997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2440129927) 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 as a sum of consecutive naturals, namely, 1220064998 + 1220064999.

It is an arithmetic number, because the mean of its divisors is an integer number (1220064999).

Almost surely, 2^2440129997 is an apocalyptic number.

It is an amenable number.

2440129997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2440129997 is an equidigital number, since it uses as much as digits as its factorization.

2440129997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 2440129997 is about 49397.6719795579. The cubic root of 2440129997 is about 1346.2870075208.

The spelling of 2440129997 in words is "two billion, four hundred forty million, one hundred twenty-nine thousand, nine hundred ninety-seven".