43429937 has 2 divisors, whose sum is σ = 43429938. Its totient is φ = 43429936.

The previous prime is 43429933. The next prime is 43429961. The reversal of 43429937 is 73992434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36675136 + 6754801 = 6056^2 + 2599^2 .

It is a cyclic number.

It is not a de Polignac number, because 43429937 - 2² = 43429933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43429894 and 43429903.

It is not a weakly prime, because it can be changed into another prime (43429933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21714968 + 21714969.

It is an arithmetic number, because the mean of its divisors is an integer number (21714969).

Almost surely, 2^43429937 is an apocalyptic number.

It is an amenable number.

43429937 is a deficient number, since it is larger than the sum of its proper divisors (1).

43429937 is an equidigital number, since it uses as much as digits as its factorization.

43429937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 41.

The square root of 43429937 is about 6590.1393763713. The cubic root of 43429937 is about 351.5035642454.

The spelling of 43429937 in words is "forty-three million, four hundred twenty-nine thousand, nine hundred thirty-seven".