402246623 has 2 divisors, whose sum is σ = 402246624. Its totient is φ = 402246622.

The previous prime is 402246619. The next prime is 402246631. The reversal of 402246623 is 326642204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402246623 - 2² = 402246619 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402246653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201123311 + 201123312.

It is an arithmetic number, because the mean of its divisors is an integer number (201123312).

Almost surely, 2^402246623 is an apocalyptic number.

402246623 is a deficient number, since it is larger than the sum of its proper divisors (1).

402246623 is an equidigital number, since it uses as much as digits as its factorization.

402246623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 402246623 is about 20056.0869314031. The cubic root of 402246623 is about 738.1831635078.

Adding to 402246623 its reverse (326642204), we get a palindrome (728888827).

The spelling of 402246623 in words is "four hundred two million, two hundred forty-six thousand, six hundred twenty-three".