404434342139 has 2 divisors, whose sum is σ = 404434342140. Its totient is φ = 404434342138.

The previous prime is 404434342097. The next prime is 404434342201. The reversal of 404434342139 is 931243434404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404434342139 is a prime.

It is a super-2 number, since 2×404434342139² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 404434342096 and 404434342105.

It is not a weakly prime, because it can be changed into another prime (404434042139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202217171069 + 202217171070.

It is an arithmetic number, because the mean of its divisors is an integer number (202217171070).

Almost surely, 2^404434342139 is an apocalyptic number.

404434342139 is a deficient number, since it is larger than the sum of its proper divisors (1).

404434342139 is an equidigital number, since it uses as much as digits as its factorization.

404434342139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 404434342139 in words is "four hundred four billion, four hundred thirty-four million, three hundred forty-two thousand, one hundred thirty-nine".