10439890 has 16 divisors (see below), whose sum is σ = 18866520. Its totient is φ = 4159360.

The previous prime is 10439857. The next prime is 10439917. The reversal of 10439890 is 9893401.

It can be written as a sum of positive squares in 4 ways, for example, as 6507601 + 3932289 = 2551^2 + 1983^2 .

It is an unprimeable number.

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, 750 + ... + 4630.

Almost surely, 2^10439890 is an apocalyptic number.

10439890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10439890 is a deficient number, since it is larger than the sum of its proper divisors (8426630).

10439890 is a wasteful number, since it uses less digits than its factorization.

10439890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 10439890 is about 3231.0818621632. The cubic root of 10439890 is about 218.5572953234.

The spelling of 10439890 in words is "ten million, four hundred thirty-nine thousand, eight hundred ninety".