402455593 has 2 divisors, whose sum is σ = 402455594. Its totient is φ = 402455592.

The previous prime is 402455563. The next prime is 402455617. The reversal of 402455593 is 395554204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226442304 + 176013289 = 15048^2 + 13267^2 .

It is a cyclic number.

It is not a de Polignac number, because 402455593 - 2⁵ = 402455561 is a prime.

It is not a weakly prime, because it can be changed into another prime (402455563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201227796 + 201227797.

It is an arithmetic number, because the mean of its divisors is an integer number (201227797).

Almost surely, 2^402455593 is an apocalyptic number.

It is an amenable number.

402455593 is a deficient number, since it is larger than the sum of its proper divisors (1).

402455593 is an equidigital number, since it uses as much as digits as its factorization.

402455593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 402455593 is about 20061.2958953304. The cubic root of 402455593 is about 738.3109718571.

The spelling of 402455593 in words is "four hundred two million, four hundred fifty-five thousand, five hundred ninety-three".