406673851 has 2 divisors, whose sum is σ = 406673852. Its totient is φ = 406673850.

The previous prime is 406673759. The next prime is 406673857. The reversal of 406673851 is 158376604.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406673851 - 2⁹ = 406673339 is a prime.

It is not a weakly prime, because it can be changed into another prime (406673857) 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, 203336925 + 203336926.

It is an arithmetic number, because the mean of its divisors is an integer number (203336926).

Almost surely, 2^406673851 is an apocalyptic number.

406673851 is a deficient number, since it is larger than the sum of its proper divisors (1).

406673851 is an equidigital number, since it uses as much as digits as its factorization.

406673851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 406673851 is about 20166.1560789358. The cubic root of 406673851 is about 740.8814982275.

The spelling of 406673851 in words is "four hundred six million, six hundred seventy-three thousand, eight hundred fifty-one".