4432391 has 2 divisors, whose sum is σ = 4432392. Its totient is φ = 4432390.

The previous prime is 4432381. The next prime is 4432457. The reversal of 4432391 is 1932344.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4432391 - 2¹⁰ = 4431367 is a prime.

It is equal to p₃₁₁₄₈₉ and since 4432391 and 311489 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 4432391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4432381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2216195 + 2216196.

It is an arithmetic number, because the mean of its divisors is an integer number (2216196).

Almost surely, 2^4432391 is an apocalyptic number.

4432391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4432391 is an equidigital number, since it uses as much as digits as its factorization.

4432391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 4432391 is about 2105.3244405554. The cubic root of 4432391 is about 164.2653719704.

The spelling of 4432391 in words is "four million, four hundred thirty-two thousand, three hundred ninety-one".