10399810 has 16 divisors (see below), whose sum is σ = 18791352. Its totient is φ = 4144000.

The previous prime is 10399793. The next prime is 10399811. The reversal of 10399810 is 1899301.

It can be written as a sum of positive squares in 4 ways, for example, as 8649481 + 1750329 = 2941^2 + 1323^2 .

It is a super-2 number, since 2×10399810² = 216312096072200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10399811) 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, 960 + ... + 4660.

Almost surely, 2^10399810 is an apocalyptic number.

10399810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10399810 is a deficient number, since it is larger than the sum of its proper divisors (8391542).

10399810 is a wasteful number, since it uses less digits than its factorization.

10399810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 10399810 is about 3224.8736409354. The cubic root of 10399810 is about 218.2772473436.

The spelling of 10399810 in words is "ten million, three hundred ninety-nine thousand, eight hundred ten".