16929971 has 2 divisors, whose sum is σ = 16929972. Its totient is φ = 16929970.

The previous prime is 16929961. The next prime is 16930027. The reversal of 16929971 is 17992961.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16929971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16929901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8464985 + 8464986.

It is an arithmetic number, because the mean of its divisors is an integer number (8464986).

Almost surely, 2^16929971 is an apocalyptic number.

16929971 is a deficient number, since it is larger than the sum of its proper divisors (1).

16929971 is an equidigital number, since it uses as much as digits as its factorization.

16929971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 44.

The square root of 16929971 is about 4114.6045982573. The cubic root of 16929971 is about 256.7746059377.

The spelling of 16929971 in words is "sixteen million, nine hundred twenty-nine thousand, nine hundred seventy-one".