20934401 has 2 divisors, whose sum is σ = 20934402. Its totient is φ = 20934400.

The previous prime is 20934383. The next prime is 20934437. The reversal of 20934401 is 10443902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14070001 + 6864400 = 3751^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 20934401 - 2⁶ = 20934337 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_1326074 and since 20934401 and 1326074 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 (20934461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10467200 + 10467201.

It is an arithmetic number, because the mean of its divisors is an integer number (10467201).

Almost surely, 2^20934401 is an apocalyptic number.

It is an amenable number.

20934401 is a deficient number, since it is larger than the sum of its proper divisors (1).

20934401 is an equidigital number, since it uses as much as digits as its factorization.

20934401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20934401 is about 4575.4126589850. The cubic root of 20934401 is about 275.6048439180.

The spelling of 20934401 in words is "twenty million, nine hundred thirty-four thousand, four hundred one".