43402297 has 2 divisors, whose sum is σ = 43402298. Its totient is φ = 43402296.

The previous prime is 43402279. The next prime is 43402301. The reversal of 43402297 is 79220434.

Together with previous prime (43402279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41267776 + 2134521 = 6424^2 + 1461^2 .

It is a cyclic number.

It is not a de Polignac number, because 43402297 - 2²³ = 35013689 is a prime.

It is not a weakly prime, because it can be changed into another prime (43402217) 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, 21701148 + 21701149.

It is an arithmetic number, because the mean of its divisors is an integer number (21701149).

Almost surely, 2^43402297 is an apocalyptic number.

It is an amenable number.

43402297 is a deficient number, since it is larger than the sum of its proper divisors (1).

43402297 is an equidigital number, since it uses as much as digits as its factorization.

43402297 is an odious number, because the sum of its binary digits is odd.

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

The square root of 43402297 is about 6588.0419701152. The cubic root of 43402297 is about 351.4289795925.

The spelling of 43402297 in words is "forty-three million, four hundred two thousand, two hundred ninety-seven".