10139566 has 4 divisors (see below), whose sum is σ = 15209352. Its totient is φ = 5069782.

The previous prime is 10139557. The next prime is 10139609. The reversal of 10139566 is 66593101.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2534890 + ... + 2534893.

It is an arithmetic number, because the mean of its divisors is an integer number (3802338).

Almost surely, 2^10139566 is an apocalyptic number.

10139566 is a deficient number, since it is larger than the sum of its proper divisors (5069786).

10139566 is an equidigital number, since it uses as much as digits as its factorization.

10139566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5069785.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 10139566 is about 3184.2685188281. The cubic root of 10139566 is about 216.4411280953.

The spelling of 10139566 in words is "ten million, one hundred thirty-nine thousand, five hundred sixty-six".