43964101 has 2 divisors, whose sum is σ = 43964102. Its totient is φ = 43964100.

The previous prime is 43964099. The next prime is 43964111. The reversal of 43964101 is 10146934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39363076 + 4601025 = 6274^2 + 2145^2 .

It is a cyclic number.

It is not a de Polignac number, because 43964101 - 2¹ = 43964099 is a prime.

Together with 43964099, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 43964101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43964111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21982050 + 21982051.

It is an arithmetic number, because the mean of its divisors is an integer number (21982051).

Almost surely, 2^43964101 is an apocalyptic number.

It is an amenable number.

43964101 is a deficient number, since it is larger than the sum of its proper divisors (1).

43964101 is an equidigital number, since it uses as much as digits as its factorization.

43964101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 43964101 is about 6630.5430396009. The cubic root of 43964101 is about 352.9387953069.

The spelling of 43964101 in words is "forty-three million, nine hundred sixty-four thousand, one hundred one".