16404863 has 2 divisors, whose sum is σ = 16404864. Its totient is φ = 16404862.

The previous prime is 16404851. The next prime is 16404937. The reversal of 16404863 is 36840461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16404863 - 2¹⁶ = 16339327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16404803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8202431 + 8202432.

It is an arithmetic number, because the mean of its divisors is an integer number (8202432).

Almost surely, 2^16404863 is an apocalyptic number.

16404863 is a deficient number, since it is larger than the sum of its proper divisors (1).

16404863 is an equidigital number, since it uses as much as digits as its factorization.

16404863 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 32.

The square root of 16404863 is about 4050.2917178890. The cubic root of 16404863 is about 254.0919284089.

The spelling of 16404863 in words is "sixteen million, four hundred four thousand, eight hundred sixty-three".