10399686 has 16 divisors (see below), whose sum is σ = 22690368. Its totient is φ = 3151400.

The previous prime is 10399637. The next prime is 10399687. The reversal of 10399686 is 68699301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10399687) 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, 78720 + ... + 78851.

It is an arithmetic number, because the mean of its divisors is an integer number (1418148).

Almost surely, 2^10399686 is an apocalyptic number.

10399686 is an abundant number, since it is smaller than the sum of its proper divisors (12290682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10399686 is a wasteful number, since it uses less digits than its factorization.

10399686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157587.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 10399686 is about 3224.8544153186. The cubic root of 10399686 is about 218.2763798121.

The spelling of 10399686 in words is "ten million, three hundred ninety-nine thousand, six hundred eighty-six".