2443729 has 2 divisors, whose sum is σ = 2443730. Its totient is φ = 2443728.

The previous prime is 2443703. The next prime is 2443741. The reversal of 2443729 is 9273442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1896129 + 547600 = 1377^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 2443729 - 2⁷ = 2443601 is a prime.

It is a super-2 number, since 2×2443729² = 11943622850882, which contains 22 as substring.

It is a Chen prime.

It is equal to p₁₇₉₂₃₉ and since 2443729 and 179239 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2443729.

It is not a weakly prime, because it can be changed into another prime (2443789) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1221864 + 1221865.

It is an arithmetic number, because the mean of its divisors is an integer number (1221865).

2^2443729 is an apocalyptic number.

It is an amenable number.

2443729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2443729 is an equidigital number, since it uses as much as digits as its factorization.

2443729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 2443729 is about 1563.2431032952. The cubic root of 2443729 is about 134.6948572108.

The spelling of 2443729 in words is "two million, four hundred forty-three thousand, seven hundred twenty-nine".