8138975 has 24 divisors (see below), whose sum is σ = 11040960. Its totient is φ = 5915520.

The previous prime is 8138947. The next prime is 8138981. The reversal of 8138975 is 5798318.

It is a happy number.

It is not a de Polignac number, because 8138975 - 2¹⁴ = 8122591 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25517 + ... + 25833.

It is an arithmetic number, because the mean of its divisors is an integer number (460040).

Almost surely, 2^8138975 is an apocalyptic number.

8138975 is a deficient number, since it is larger than the sum of its proper divisors (2901985).

8138975 is a wasteful number, since it uses less digits than its factorization.

8138975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 414 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 8138975 is about 2852.8888867252. Note that the first 5 decimals coincide. The cubic root of 8138975 is about 201.1514827147.

The spelling of 8138975 in words is "eight million, one hundred thirty-eight thousand, nine hundred seventy-five".