406553423 has 2 divisors, whose sum is σ = 406553424. Its totient is φ = 406553422.

The previous prime is 406553383. The next prime is 406553429. The reversal of 406553423 is 324355604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406553423 - 2⁸ = 406553167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406553423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406553429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203276711 + 203276712.

It is an arithmetic number, because the mean of its divisors is an integer number (203276712).

Almost surely, 2^406553423 is an apocalyptic number.

406553423 is a deficient number, since it is larger than the sum of its proper divisors (1).

406553423 is an equidigital number, since it uses as much as digits as its factorization.

406553423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 406553423 is about 20163.1699640706. The cubic root of 406553423 is about 740.8083587937.

The spelling of 406553423 in words is "four hundred six million, five hundred fifty-three thousand, four hundred twenty-three".