16974401 has 2 divisors, whose sum is σ = 16974402. Its totient is φ = 16974400.

The previous prime is 16974371. The next prime is 16974403. The reversal of 16974401 is 10447961.

It is a Cunningham number, because it is equal to 4120²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16974400 + 1 = 4120^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 16974401 - 2¹⁰ = 16973377 is a prime.

Together with 16974403, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1089770 and since 16974401 and 1089770 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (16974403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8487200 + 8487201.

It is an arithmetic number, because the mean of its divisors is an integer number (8487201).

Almost surely, 2^16974401 is an apocalyptic number.

It is an amenable number.

16974401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16974401 is an equidigital number, since it uses as much as digits as its factorization.

16974401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 16974401 is about 4120.0001213592. Note that the first 3 decimals coincide. The cubic root of 16974401 is about 256.9990310188. Note that the first 3 decimals are identical.

The spelling of 16974401 in words is "sixteen million, nine hundred seventy-four thousand, four hundred one".