16212949 has 2 divisors, whose sum is σ = 16212950. Its totient is φ = 16212948.

The previous prime is 16212929. The next prime is 16212967. The reversal of 16212949 is 94921261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10176100 + 6036849 = 3190^2 + 2457^2 .

It is an emirp because it is prime and its reverse (94921261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16212949 - 2⁹ = 16212437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16212929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8106474 + 8106475.

It is an arithmetic number, because the mean of its divisors is an integer number (8106475).

Almost surely, 2^16212949 is an apocalyptic number.

It is an amenable number.

16212949 is a deficient number, since it is larger than the sum of its proper divisors (1).

16212949 is an equidigital number, since it uses as much as digits as its factorization.

16212949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 16212949 is about 4026.5306406384. The cubic root of 16212949 is about 253.0971989789.

It can be divided in two parts, 16212 and 949, that added together give a square (17161 = 131²).

The spelling of 16212949 in words is "sixteen million, two hundred twelve thousand, nine hundred forty-nine".