402430687 has 2 divisors, whose sum is σ = 402430688. Its totient is φ = 402430686.

The previous prime is 402430667. The next prime is 402430727. The reversal of 402430687 is 786034204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402430687 - 2¹⁹ = 401906399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402430657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201215343 + 201215344.

It is an arithmetic number, because the mean of its divisors is an integer number (201215344).

Almost surely, 2^402430687 is an apocalyptic number.

402430687 is a deficient number, since it is larger than the sum of its proper divisors (1).

402430687 is an equidigital number, since it uses as much as digits as its factorization.

402430687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 402430687 is about 20060.6751381901. The cubic root of 402430687 is about 738.2957413963.

The spelling of 402430687 in words is "four hundred two million, four hundred thirty thousand, six hundred eighty-seven".