43867961 has 2 divisors, whose sum is σ = 43867962. Its totient is φ = 43867960.

The previous prime is 43867949. The next prime is 43867997. The reversal of 43867961 is 16976834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29767936 + 14100025 = 5456^2 + 3755^2 .

It is a cyclic number.

It is not a de Polignac number, because 43867961 - 2⁶ = 43867897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43867931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21933980 + 21933981.

It is an arithmetic number, because the mean of its divisors is an integer number (21933981).

Almost surely, 2^43867961 is an apocalyptic number.

It is an amenable number.

43867961 is a deficient number, since it is larger than the sum of its proper divisors (1).

43867961 is an equidigital number, since it uses as much as digits as its factorization.

43867961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 43867961 is about 6623.2892885635. The cubic root of 43867961 is about 352.6813405598.

The spelling of 43867961 in words is "forty-three million, eight hundred sixty-seven thousand, nine hundred sixty-one".