10209979 has 8 divisors (see below), whose sum is σ = 11642400. Its totient is φ = 8870016.

The previous prime is 10209971. The next prime is 10210007. The reversal of 10209979 is 97990201.

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 10209979 - 2³ = 10209971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10209971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22879 + ... + 23320.

It is an arithmetic number, because the mean of its divisors is an integer number (1455300).

Almost surely, 2^10209979 is an apocalyptic number.

10209979 is a deficient number, since it is larger than the sum of its proper divisors (1432421).

10209979 is a wasteful number, since it uses less digits than its factorization.

10209979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46229.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 10209979 is about 3195.3057756653. The cubic root of 10209979 is about 216.9409892845.

The spelling of 10209979 in words is "ten million, two hundred nine thousand, nine hundred seventy-nine".