406688743 has 2 divisors, whose sum is σ = 406688744. Its totient is φ = 406688742.

The previous prime is 406688731. The next prime is 406688801. The reversal of 406688743 is 347886604.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406688743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 406688693 and 406688702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406688543) 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, 203344371 + 203344372.

It is an arithmetic number, because the mean of its divisors is an integer number (203344372).

Almost surely, 2^406688743 is an apocalyptic number.

406688743 is a deficient number, since it is larger than the sum of its proper divisors (1).

406688743 is an equidigital number, since it uses as much as digits as its factorization.

406688743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 46.

The square root of 406688743 is about 20166.5253080445. The cubic root of 406688743 is about 740.8905415699.

The spelling of 406688743 in words is "four hundred six million, six hundred eighty-eight thousand, seven hundred forty-three".