16349401 has 2 divisors, whose sum is σ = 16349402. Its totient is φ = 16349400.

The previous prime is 16349381. The next prime is 16349419. The reversal of 16349401 is 10494361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15960025 + 389376 = 3995^2 + 624^2 .

It is a cyclic number.

It is not a de Polignac number, because 16349401 - 2⁹ = 16348889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16349401.

It is not a weakly prime, because it can be changed into another prime (16349441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8174700 + 8174701.

It is an arithmetic number, because the mean of its divisors is an integer number (8174701).

Almost surely, 2^16349401 is an apocalyptic number.

It is an amenable number.

16349401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16349401 is an equidigital number, since it uses as much as digits as its factorization.

16349401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 16349401 is about 4043.4392539025. The cubic root of 16349401 is about 253.8052581737.

The spelling of 16349401 in words is "sixteen million, three hundred forty-nine thousand, four hundred one".