16436401 has 2 divisors, whose sum is σ = 16436402. Its totient is φ = 16436400.

The previous prime is 16436393. The next prime is 16436411. The reversal of 16436401 is 10463461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14938225 + 1498176 = 3865^2 + 1224^2 .

It is a cyclic number.

It is not a de Polignac number, because 16436401 - 2³ = 16436393 is a prime.

It is not a weakly prime, because it can be changed into another prime (16436411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8218200 + 8218201.

It is an arithmetic number, because the mean of its divisors is an integer number (8218201).

Almost surely, 2^16436401 is an apocalyptic number.

It is an amenable number.

16436401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16436401 is an equidigital number, since it uses as much as digits as its factorization.

16436401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 16436401 is about 4054.1831483050. The cubic root of 16436401 is about 254.2546529502.

Adding to 16436401 its reverse (10463461), we get a palindrome (26899862).

The spelling of 16436401 in words is "sixteen million, four hundred thirty-six thousand, four hundred one".