43401401 has 2 divisors, whose sum is σ = 43401402. Its totient is φ = 43401400.

The previous prime is 43401373. The next prime is 43401451. The reversal of 43401401 is 10410434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39075001 + 4326400 = 6251^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 43401401 - 2²² = 39207097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43401401.

It is not a weakly prime, because it can be changed into another prime (43401451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21700700 + 21700701.

It is an arithmetic number, because the mean of its divisors is an integer number (21700701).

Almost surely, 2^43401401 is an apocalyptic number.

It is an amenable number.

43401401 is a deficient number, since it is larger than the sum of its proper divisors (1).

43401401 is an equidigital number, since it uses as much as digits as its factorization.

43401401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 43401401 is about 6587.9739677688. The cubic root of 43401401 is about 351.4265612678.

Adding to 43401401 its reverse (10410434), we get a palindrome (53811835).

The spelling of 43401401 in words is "forty-three million, four hundred one thousand, four hundred one".