406399927 has 2 divisors, whose sum is σ = 406399928. Its totient is φ = 406399926.

The previous prime is 406399921. The next prime is 406399933. The reversal of 406399927 is 729993604.

It is a balanced prime because it is at equal distance from previous prime (406399921) and next prime (406399933).

It is a cyclic number.

It is not a de Polignac number, because 406399927 - 2²³ = 398011319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406399921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203199963 + 203199964.

It is an arithmetic number, because the mean of its divisors is an integer number (203199964).

Almost surely, 2^406399927 is an apocalyptic number.

406399927 is a deficient number, since it is larger than the sum of its proper divisors (1).

406399927 is an equidigital number, since it uses as much as digits as its factorization.

406399927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 406399927 is about 20159.3632587937. The cubic root of 406399927 is about 740.7151152598.

The spelling of 406399927 in words is "four hundred six million, three hundred ninety-nine thousand, nine hundred twenty-seven".