43398461 has 2 divisors, whose sum is σ = 43398462. Its totient is φ = 43398460.

The previous prime is 43398409. The next prime is 43398469. The reversal of 43398461 is 16489334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33120025 + 10278436 = 5755^2 + 3206^2 .

It is a cyclic number.

It is not a de Polignac number, because 43398461 - 2¹⁰ = 43397437 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43398469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21699230 + 21699231.

It is an arithmetic number, because the mean of its divisors is an integer number (21699231).

Almost surely, 2^43398461 is an apocalyptic number.

It is an amenable number.

43398461 is a deficient number, since it is larger than the sum of its proper divisors (1).

43398461 is an equidigital number, since it uses as much as digits as its factorization.

43398461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 43398461 is about 6587.7508301392. The cubic root of 43398461 is about 351.4186259063.

The spelling of 43398461 in words is "forty-three million, three hundred ninety-eight thousand, four hundred sixty-one".