4385997478829 has 2 divisors, whose sum is σ = 4385997478830. Its totient is φ = 4385997478828.

The previous prime is 4385997478787. The next prime is 4385997478831. The reversal of 4385997478829 is 9288747995834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3878201569225 + 507795909604 = 1969315^2 + 712598^2 .

It is a cyclic number.

It is not a de Polignac number, because 4385997478829 - 2²⁰ = 4385996430253 is a prime.

It is a super-2 number, since 2×4385997478829² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 4385997478831, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4385967478829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2192998739414 + 2192998739415.

It is an arithmetic number, because the mean of its divisors is an integer number (2192998739415).

Almost surely, 2^{4385997478829} is an apocalyptic number.

It is an amenable number.

4385997478829 is a deficient number, since it is larger than the sum of its proper divisors (1).

4385997478829 is an equidigital number, since it uses as much as digits as its factorization.

4385997478829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8778792960, while the sum is 83.

The spelling of 4385997478829 in words is "four trillion, three hundred eighty-five billion, nine hundred ninety-seven million, four hundred seventy-eight thousand, eight hundred twenty-nine".