406459139 has 2 divisors, whose sum is σ = 406459140. Its totient is φ = 406459138.

The previous prime is 406459127. The next prime is 406459169. The reversal of 406459139 is 931954604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406459139 - 2²⁰ = 405410563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 406459096 and 406459105.

It is not a weakly prime, because it can be changed into another prime (406459169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203229569 + 203229570.

It is an arithmetic number, because the mean of its divisors is an integer number (203229570).

Almost surely, 2^406459139 is an apocalyptic number.

406459139 is a deficient number, since it is larger than the sum of its proper divisors (1).

406459139 is an equidigital number, since it uses as much as digits as its factorization.

406459139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 406459139 is about 20160.8318032764. The cubic root of 406459139 is about 740.7510872918.

The spelling of 406459139 in words is "four hundred six million, four hundred fifty-nine thousand, one hundred thirty-nine".