10139979 has 8 divisors (see below), whose sum is σ = 13543632. Its totient is φ = 6748160.

The previous prime is 10139953. The next prime is 10139989. The reversal of 10139979 is 97993101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10139979 - 2¹¹ = 10137931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10139929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714 + ... + 4559.

It is an arithmetic number, because the mean of its divisors is an integer number (1692954).

Almost surely, 2^10139979 is an apocalyptic number.

10139979 is a deficient number, since it is larger than the sum of its proper divisors (3403653).

10139979 is an equidigital number, since it uses as much as digits as its factorization.

10139979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5917.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 10139979 is about 3184.3333682264. Note that the first 4 decimals coincide. The cubic root of 10139979 is about 216.4440667146. Note that the first 3 decimals are identical.

The spelling of 10139979 in words is "ten million, one hundred thirty-nine thousand, nine hundred seventy-nine".