43423697 has 2 divisors, whose sum is σ = 43423698. Its totient is φ = 43423696.

The previous prime is 43423673. The next prime is 43423717. The reversal of 43423697 is 79632434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27415696 + 16008001 = 5236^2 + 4001^2 .

It is a cyclic number.

It is not a de Polignac number, because 43423697 - 2¹² = 43419601 is a prime.

It is a super-2 number, since 2×43423697² = 3771234922295618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43423697.

It is not a weakly prime, because it can be changed into another prime (43423097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21711848 + 21711849.

It is an arithmetic number, because the mean of its divisors is an integer number (21711849).

Almost surely, 2^43423697 is an apocalyptic number.

It is an amenable number.

43423697 is a deficient number, since it is larger than the sum of its proper divisors (1).

43423697 is an equidigital number, since it uses as much as digits as its factorization.

43423697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 38.

The square root of 43423697 is about 6589.6659247643. The cubic root of 43423697 is about 351.4867287977.

The spelling of 43423697 in words is "forty-three million, four hundred twenty-three thousand, six hundred ninety-seven".