10143809 has 8 divisors (see below), whose sum is σ = 11219880. Its totient is φ = 9110016.

The previous prime is 10143799. The next prime is 10143817. The reversal of 10143809 is 90834101.

It can be written as a sum of positive squares in 4 ways, for example, as 4840000 + 5303809 = 2200^2 + 2303^2 .

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 10143809 - 2¹⁶ = 10078273 is a prime.

It is a super-2 number, since 2×10143809² = 205793722056962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10143839) 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, 10064 + ... + 11025.

It is an arithmetic number, because the mean of its divisors is an integer number (1402485).

Almost surely, 2^10143809 is an apocalyptic number.

It is an amenable number.

10143809 is a deficient number, since it is larger than the sum of its proper divisors (1076071).

10143809 is a wasteful number, since it uses less digits than its factorization.

10143809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21139.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 10143809 is about 3184.9346932080. The cubic root of 10143809 is about 216.4713145168.

The spelling of 10143809 in words is "ten million, one hundred forty-three thousand, eight hundred nine".