43898461 has 2 divisors, whose sum is σ = 43898462. Its totient is φ = 43898460.

The previous prime is 43898447. The next prime is 43898501. The reversal of 43898461 is 16489834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43099225 + 799236 = 6565^2 + 894^2 .

It is a cyclic number.

It is not a de Polignac number, because 43898461 - 2⁹ = 43897949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43898401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21949230 + 21949231.

It is an arithmetic number, because the mean of its divisors is an integer number (21949231).

Almost surely, 2^43898461 is an apocalyptic number.

It is an amenable number.

43898461 is a deficient number, since it is larger than the sum of its proper divisors (1).

43898461 is an equidigital number, since it uses as much as digits as its factorization.

43898461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 43.

The square root of 43898461 is about 6625.5913698326. The cubic root of 43898461 is about 352.7630576691.

The spelling of 43898461 in words is "forty-three million, eight hundred ninety-eight thousand, four hundred sixty-one".