402154663 has 2 divisors, whose sum is σ = 402154664. Its totient is φ = 402154662.

The previous prime is 402154657. The next prime is 402154667. The reversal of 402154663 is 366451204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402154663 - 2¹³ = 402146471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402154667) 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, 201077331 + 201077332.

It is an arithmetic number, because the mean of its divisors is an integer number (201077332).

Almost surely, 2^402154663 is an apocalyptic number.

402154663 is a deficient number, since it is larger than the sum of its proper divisors (1).

402154663 is an equidigital number, since it uses as much as digits as its factorization.

402154663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 402154663 is about 20053.7942295218. The cubic root of 402154663 is about 738.1269057350.

The spelling of 402154663 in words is "four hundred two million, one hundred fifty-four thousand, six hundred sixty-three".