43933139 has 2 divisors, whose sum is σ = 43933140. Its totient is φ = 43933138.

The previous prime is 43933133. The next prime is 43933147. The reversal of 43933139 is 93133934.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43933139 - 2¹² = 43929043 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 43933099 and 43933108.

It is not a weakly prime, because it can be changed into another prime (43933133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21966569 + 21966570.

It is an arithmetic number, because the mean of its divisors is an integer number (21966570).

Almost surely, 2^43933139 is an apocalyptic number.

43933139 is a deficient number, since it is larger than the sum of its proper divisors (1).

43933139 is an equidigital number, since it uses as much as digits as its factorization.

43933139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 35.

The square root of 43933139 is about 6628.2078271581. The cubic root of 43933139 is about 352.8559227129.

The spelling of 43933139 in words is "forty-three million, nine hundred thirty-three thousand, one hundred thirty-nine".