406156427 has 2 divisors, whose sum is σ = 406156428. Its totient is φ = 406156426.

The previous prime is 406156381. The next prime is 406156481. The reversal of 406156427 is 724651604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406156427 - 2⁸ = 406156171 is a prime.

It is not a weakly prime, because it can be changed into another prime (406156627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203078213 + 203078214.

It is an arithmetic number, because the mean of its divisors is an integer number (203078214).

Almost surely, 2^406156427 is an apocalyptic number.

406156427 is a deficient number, since it is larger than the sum of its proper divisors (1).

406156427 is an equidigital number, since it uses as much as digits as its factorization.

406156427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 406156427 is about 20153.3229766210. The cubic root of 406156427 is about 740.5671492186.

The spelling of 406156427 in words is "four hundred six million, one hundred fifty-six thousand, four hundred twenty-seven".