16434403 has 2 divisors, whose sum is σ = 16434404. Its totient is φ = 16434402.

The previous prime is 16434389. The next prime is 16434409. The reversal of 16434403 is 30443461.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (30443461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16434403 - 2¹³ = 16426211 is a prime.

It is not a weakly prime, because it can be changed into another prime (16434409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8217201 + 8217202.

It is an arithmetic number, because the mean of its divisors is an integer number (8217202).

Almost surely, 2^16434403 is an apocalyptic number.

16434403 is a deficient number, since it is larger than the sum of its proper divisors (1).

16434403 is an equidigital number, since it uses as much as digits as its factorization.

16434403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 16434403 is about 4053.9367286626. The cubic root of 16434403 is about 254.2443501802.

Adding to 16434403 its reverse (30443461), we get a palindrome (46877864).

The spelling of 16434403 in words is "sixteen million, four hundred thirty-four thousand, four hundred three".