16939541 has 2 divisors, whose sum is σ = 16939542. Its totient is φ = 16939540.

The previous prime is 16939537. The next prime is 16939561. The reversal of 16939541 is 14593961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14032516 + 2907025 = 3746^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 16939541 - 2² = 16939537 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16939495 and 16939504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16939501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8469770 + 8469771.

It is an arithmetic number, because the mean of its divisors is an integer number (8469771).

Almost surely, 2^16939541 is an apocalyptic number.

It is an amenable number.

16939541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16939541 is an equidigital number, since it uses as much as digits as its factorization.

16939541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 38.

The square root of 16939541 is about 4115.7673646600. The cubic root of 16939541 is about 256.8229791276.

The spelling of 16939541 in words is "sixteen million, nine hundred thirty-nine thousand, five hundred forty-one".