16922401 has 2 divisors, whose sum is σ = 16922402. Its totient is φ = 16922400.

The previous prime is 16922393. The next prime is 16922417. The reversal of 16922401 is 10422961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13950225 + 2972176 = 3735^2 + 1724^2 .

It is a cyclic number.

It is not a de Polignac number, because 16922401 - 2³ = 16922393 is a prime.

It is equal to p_1086604 and since 16922401 and 1086604 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 (16922471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8461200 + 8461201.

It is an arithmetic number, because the mean of its divisors is an integer number (8461201).

Almost surely, 2^16922401 is an apocalyptic number.

It is an amenable number.

16922401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16922401 is an equidigital number, since it uses as much as digits as its factorization.

16922401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 16922401 is about 4113.6846014249. The cubic root of 16922401 is about 256.7363291730.

The spelling of 16922401 in words is "sixteen million, nine hundred twenty-two thousand, four hundred one".