8129746 has 4 divisors (see below), whose sum is σ = 12194622. Its totient is φ = 4064872.

The previous prime is 8129743. The next prime is 8129761. The reversal of 8129746 is 6479218.

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

It can be written as a sum of positive squares in only one way, i.e., 8094025 + 35721 = 2845^2 + 189^2 .

It is not an unprimeable number, because it can be changed into a prime (8129743) 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 as a sum of consecutive naturals, namely, 2032435 + ... + 2032438.

Almost surely, 2^8129746 is an apocalyptic number.

8129746 is a deficient number, since it is larger than the sum of its proper divisors (4064876).

8129746 is a wasteful number, since it uses less digits than its factorization.

8129746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064875.

The product of its digits is 24192, while the sum is 37.

The square root of 8129746 is about 2851.2709446841. The cubic root of 8129746 is about 201.0754236221.

The spelling of 8129746 in words is "eight million, one hundred twenty-nine thousand, seven hundred forty-six".