16953949 has 4 divisors (see below), whose sum is σ = 17028864. Its totient is φ = 16879036.

The previous prime is 16953929. The next prime is 16953971. The reversal of 16953949 is 94935961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94935961 = 733 ⋅129517.

It is a cyclic number.

It is not a de Polignac number, because 16953949 - 2⁵ = 16953917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16953899 and 16953908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16953919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37117 + ... + 37570.

It is an arithmetic number, because the mean of its divisors is an integer number (4257216).

Almost surely, 2^16953949 is an apocalyptic number.

It is an amenable number.

16953949 is a deficient number, since it is larger than the sum of its proper divisors (74915).

16953949 is an equidigital number, since it uses as much as digits as its factorization.

16953949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74914.

The product of its digits is 262440, while the sum is 46.

The square root of 16953949 is about 4117.5173345112. The cubic root of 16953949 is about 256.8957724592.

The spelling of 16953949 in words is "sixteen million, nine hundred fifty-three thousand, nine hundred forty-nine".