400243027 has 2 divisors, whose sum is σ = 400243028. Its totient is φ = 400243026.

The previous prime is 400243001. The next prime is 400243031. The reversal of 400243027 is 720342004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400243027 - 2¹⁵ = 400210259 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 400242989 and 400243007.

It is not a weakly prime, because it can be changed into another prime (400246027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200121513 + 200121514.

It is an arithmetic number, because the mean of its divisors is an integer number (200121514).

Almost surely, 2^400243027 is an apocalyptic number.

400243027 is a deficient number, since it is larger than the sum of its proper divisors (1).

400243027 is an equidigital number, since it uses as much as digits as its factorization.

400243027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 400243027 is about 20006.0747524346. The cubic root of 400243027 is about 736.9554893717.

The spelling of 400243027 in words is "four hundred million, two hundred forty-three thousand, twenty-seven".