406641959 has 2 divisors, whose sum is σ = 406641960. Its totient is φ = 406641958.

The previous prime is 406641923. The next prime is 406642087. The reversal of 406641959 is 959146604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406641959 - 2²⁸ = 138206503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406641919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203320979 + 203320980.

It is an arithmetic number, because the mean of its divisors is an integer number (203320980).

Almost surely, 2^406641959 is an apocalyptic number.

406641959 is a deficient number, since it is larger than the sum of its proper divisors (1).

406641959 is an equidigital number, since it uses as much as digits as its factorization.

406641959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 406641959 is about 20165.3653326688. The cubic root of 406641959 is about 740.8621306923.

The spelling of 406641959 in words is "four hundred six million, six hundred forty-one thousand, nine hundred fifty-nine".