8434391 has 8 divisors (see below), whose sum is σ = 9657120. Its totient is φ = 7216128.

The previous prime is 8434379. The next prime is 8434403. The reversal of 8434391 is 1934348.

It is an interprime number because it is at equal distance from previous prime (8434379) and next prime (8434403).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8434391 - 2¹⁰ = 8433367 is a prime.

It is a super-2 number, since 2×8434391² = 142277903081762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8434351) 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 in 7 ways as a sum of consecutive naturals, for example, 5855 + ... + 7151.

It is an arithmetic number, because the mean of its divisors is an integer number (1207140).

Almost surely, 2^8434391 is an apocalyptic number.

8434391 is a deficient number, since it is larger than the sum of its proper divisors (1222729).

8434391 is a wasteful number, since it uses less digits than its factorization.

8434391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233.

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

The square root of 8434391 is about 2904.2023001162. The cubic root of 8434391 is about 203.5563133598.

The spelling of 8434391 in words is "eight million, four hundred thirty-four thousand, three hundred ninety-one".