402544427 has 2 divisors, whose sum is σ = 402544428. Its totient is φ = 402544426.

The previous prime is 402544409. The next prime is 402544451. The reversal of 402544427 is 724445204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402544427 - 2¹⁶ = 402478891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402544393 and 402544402.

It is not a weakly prime, because it can be changed into another prime (402544327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201272213 + 201272214.

It is an arithmetic number, because the mean of its divisors is an integer number (201272214).

Almost surely, 2^402544427 is an apocalyptic number.

402544427 is a deficient number, since it is larger than the sum of its proper divisors (1).

402544427 is an equidigital number, since it uses as much as digits as its factorization.

402544427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 32.

The square root of 402544427 is about 20063.5098375135. The cubic root of 402544427 is about 738.3652903069.

The spelling of 402544427 in words is "four hundred two million, five hundred forty-four thousand, four hundred twenty-seven".