10399655 has 8 divisors (see below), whose sum is σ = 14262432. Its totient is φ = 7131168.

The previous prime is 10399637. The next prime is 10399687. The reversal of 10399655 is 55699301.

10399655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 10399655 - 2¹⁴ = 10383271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148532 + ... + 148601.

It is an arithmetic number, because the mean of its divisors is an integer number (1782804).

Almost surely, 2^10399655 is an apocalyptic number.

10399655 is a deficient number, since it is larger than the sum of its proper divisors (3862777).

10399655 is an equidigital number, since it uses as much as digits as its factorization.

10399655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297145.

The product of its (nonzero) digits is 36450, while the sum is 38.

The square root of 10399655 is about 3224.8496088965. The cubic root of 10399655 is about 218.2761629282.

The spelling of 10399655 in words is "ten million, three hundred ninety-nine thousand, six hundred fifty-five".