400504427 has 2 divisors, whose sum is σ = 400504428. Its totient is φ = 400504426.

The previous prime is 400504421. The next prime is 400504459. The reversal of 400504427 is 724405004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400504427 - 2⁸ = 400504171 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 400504396 and 400504405.

It is not a weakly prime, because it can be changed into another prime (400504421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200252213 + 200252214.

It is an arithmetic number, because the mean of its divisors is an integer number (200252214).

Almost surely, 2^400504427 is an apocalyptic number.

400504427 is a deficient number, since it is larger than the sum of its proper divisors (1).

400504427 is an equidigital number, since it uses as much as digits as its factorization.

400504427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 400504427 is about 20012.6067017768. The cubic root of 400504427 is about 737.1158904524.

The spelling of 400504427 in words is "four hundred million, five hundred four thousand, four hundred twenty-seven".