402458827 has 2 divisors, whose sum is σ = 402458828. Its totient is φ = 402458826.

The previous prime is 402458789. The next prime is 402458857. The reversal of 402458827 is 728854204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402458827 - 2¹⁹ = 401934539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402458827.

It is not a weakly prime, because it can be changed into another prime (402458857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201229413 + 201229414.

It is an arithmetic number, because the mean of its divisors is an integer number (201229414).

Almost surely, 2^402458827 is an apocalyptic number.

402458827 is a deficient number, since it is larger than the sum of its proper divisors (1).

402458827 is an equidigital number, since it uses as much as digits as its factorization.

402458827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 402458827 is about 20061.3764981369. The cubic root of 402458827 is about 738.3129494594.

The spelling of 402458827 in words is "four hundred two million, four hundred fifty-eight thousand, eight hundred twenty-seven".