43430993 has 2 divisors, whose sum is σ = 43430994. Its totient is φ = 43430992.

The previous prime is 43430987. The next prime is 43430999. The reversal of 43430993 is 39903434.

It is a balanced prime because it is at equal distance from previous prime (43430987) and next prime (43430999).

It can be written as a sum of positive squares in only one way, i.e., 22344529 + 21086464 = 4727^2 + 4592^2 .

It is a cyclic number.

It is not a de Polignac number, because 43430993 - 2⁴ = 43430977 is a prime.

It is not a weakly prime, because it can be changed into another prime (43430999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21715496 + 21715497.

It is an arithmetic number, because the mean of its divisors is an integer number (21715497).

Almost surely, 2^43430993 is an apocalyptic number.

It is an amenable number.

43430993 is a deficient number, since it is larger than the sum of its proper divisors (1).

43430993 is an equidigital number, since it uses as much as digits as its factorization.

43430993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 43430993 is about 6590.2194955859. The cubic root of 43430993 is about 351.5064131616.

The spelling of 43430993 in words is "forty-three million, four hundred thirty thousand, nine hundred ninety-three".