43463939 has 2 divisors, whose sum is σ = 43463940. Its totient is φ = 43463938.

The previous prime is 43463897. The next prime is 43463969. The reversal of 43463939 is 93936434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43463939 - 2⁸ = 43463683 is a prime.

It is a super-2 number, since 2×43463939² = 3778227986791442, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 43463896 and 43463905.

It is not a weakly prime, because it can be changed into another prime (43463969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21731969 + 21731970.

It is an arithmetic number, because the mean of its divisors is an integer number (21731970).

Almost surely, 2^43463939 is an apocalyptic number.

43463939 is a deficient number, since it is larger than the sum of its proper divisors (1).

43463939 is an equidigital number, since it uses as much as digits as its factorization.

43463939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 41.

The square root of 43463939 is about 6592.7186349790. The cubic root of 43463939 is about 351.5952729244.

The spelling of 43463939 in words is "forty-three million, four hundred sixty-three thousand, nine hundred thirty-nine".