443420413 has 2 divisors, whose sum is σ = 443420414. Its totient is φ = 443420412.

The previous prime is 443420399. The next prime is 443420431. The reversal of 443420413 is 314024344.

Together with next prime (443420431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276157924 + 167262489 = 16618^2 + 12933^2 .

It is a cyclic number.

It is not a de Polignac number, because 443420413 - 2²¹ = 441323261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (443420713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221710206 + 221710207.

It is an arithmetic number, because the mean of its divisors is an integer number (221710207).

Almost surely, 2^443420413 is an apocalyptic number.

It is an amenable number.

443420413 is a deficient number, since it is larger than the sum of its proper divisors (1).

443420413 is an equidigital number, since it uses as much as digits as its factorization.

443420413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 443420413 is about 21057.5500236851. The cubic root of 443420413 is about 762.5562659546.

Adding to 443420413 its reverse (314024344), we get a palindrome (757444757).

The spelling of 443420413 in words is "four hundred forty-three million, four hundred twenty thousand, four hundred thirteen".