8432381 has 4 divisors (see below), whose sum is σ = 8539200. Its totient is φ = 8325564.

The previous prime is 8432327. The next prime is 8432387. The reversal of 8432381 is 1832348.

It is a happy number.

8432381 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8432381 - 2¹⁴ = 8415997 is a prime.

It is a super-2 number, since 2×8432381² = 142210098658322, 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 (8432387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53291 + ... + 53448.

It is an arithmetic number, because the mean of its divisors is an integer number (2134800).

Almost surely, 2^8432381 is an apocalyptic number.

It is an amenable number.

8432381 is a deficient number, since it is larger than the sum of its proper divisors (106819).

8432381 is a wasteful number, since it uses less digits than its factorization.

8432381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106818.

The product of its digits is 4608, while the sum is 29.

The square root of 8432381 is about 2903.8562292235. The cubic root of 8432381 is about 203.5401422379.

The spelling of 8432381 in words is "eight million, four hundred thirty-two thousand, three hundred eighty-one".