8403138 has 24 divisors (see below), whose sum is σ = 18381168. Its totient is φ = 2774232.

The previous prime is 8403133. The next prime is 8403167. The reversal of 8403138 is 8313048.

It is a super-2 number, since 2×8403138² = 141225456494088, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8403133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256 + ... + 4107.

It is an arithmetic number, because the mean of its divisors is an integer number (765882).

Almost surely, 2^8403138 is an apocalyptic number.

8403138 is an abundant number, since it is smaller than the sum of its proper divisors (9978030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8403138 is a wasteful number, since it uses less digits than its factorization.

8403138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478 (or 4475 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8403138 is about 2898.8166551198. The cubic root of 8403138 is about 203.3045813208.

The spelling of 8403138 in words is "eight million, four hundred three thousand, one hundred thirty-eight".