4431398 has 4 divisors (see below), whose sum is σ = 6647100. Its totient is φ = 2215698.

The previous prime is 4431367. The next prime is 4431443. The reversal of 4431398 is 8931344.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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, 1107848 + ... + 1107851.

It is an arithmetic number, because the mean of its divisors is an integer number (1661775).

Almost surely, 2^4431398 is an apocalyptic number.

4431398 is a deficient number, since it is larger than the sum of its proper divisors (2215702).

4431398 is a wasteful number, since it uses less digits than its factorization.

4431398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215701.

The product of its digits is 10368, while the sum is 32.

The square root of 4431398 is about 2105.0885967104. The cubic root of 4431398 is about 164.2531041224.

The spelling of 4431398 in words is "four million, four hundred thirty-one thousand, three hundred ninety-eight".