16390937 has 2 divisors, whose sum is σ = 16390938. Its totient is φ = 16390936.

The previous prime is 16390931. The next prime is 16390951. The reversal of 16390937 is 73909361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10896601 + 5494336 = 3301^2 + 2344^2 .

It is a cyclic number.

It is not a de Polignac number, because 16390937 - 2⁸ = 16390681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16390937.

It is not a weakly prime, because it can be changed into another prime (16390931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8195468 + 8195469.

It is an arithmetic number, because the mean of its divisors is an integer number (8195469).

Almost surely, 2^16390937 is an apocalyptic number.

It is an amenable number.

16390937 is a deficient number, since it is larger than the sum of its proper divisors (1).

16390937 is an equidigital number, since it uses as much as digits as its factorization.

16390937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 16390937 is about 4048.5722174614. The cubic root of 16390937 is about 254.0200089638.

The spelling of 16390937 in words is "sixteen million, three hundred ninety thousand, nine hundred thirty-seven".