402454147 has 2 divisors, whose sum is σ = 402454148. Its totient is φ = 402454146.

The previous prime is 402454127. The next prime is 402454189. The reversal of 402454147 is 741454204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402454147 - 2¹⁹ = 401929859 is a prime.

It is not a weakly prime, because it can be changed into another prime (402454127) 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, 201227073 + 201227074.

It is an arithmetic number, because the mean of its divisors is an integer number (201227074).

Almost surely, 2^402454147 is an apocalyptic number.

402454147 is a deficient number, since it is larger than the sum of its proper divisors (1).

402454147 is an equidigital number, since it uses as much as digits as its factorization.

402454147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 402454147 is about 20061.2598557518. The cubic root of 402454147 is about 738.3100876196.

The spelling of 402454147 in words is "four hundred two million, four hundred fifty-four thousand, one hundred forty-seven".