406120999 has 2 divisors, whose sum is σ = 406121000. Its totient is φ = 406120998.

The previous prime is 406120931. The next prime is 406121003. The reversal of 406120999 is 999021604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406120999 - 2⁹ = 406120487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406120919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203060499 + 203060500.

It is an arithmetic number, because the mean of its divisors is an integer number (203060500).

Almost surely, 2^406120999 is an apocalyptic number.

406120999 is a deficient number, since it is larger than the sum of its proper divisors (1).

406120999 is an equidigital number, since it uses as much as digits as its factorization.

406120999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 406120999 is about 20152.4439957043. The cubic root of 406120999 is about 740.5456159914.

The spelling of 406120999 in words is "four hundred six million, one hundred twenty thousand, nine hundred ninety-nine".