10399657 has 4 divisors (see below), whose sum is σ = 10851840. Its totient is φ = 9947476.

The previous prime is 10399637. The next prime is 10399687. The reversal of 10399657 is 75699301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10399657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10399637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226057 + ... + 226102.

It is an arithmetic number, because the mean of its divisors is an integer number (2712960).

Almost surely, 2^10399657 is an apocalyptic number.

It is an amenable number.

10399657 is a deficient number, since it is larger than the sum of its proper divisors (452183).

10399657 is an equidigital number, since it uses as much as digits as its factorization.

10399657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452182.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 10399657 is about 3224.8499189885. The cubic root of 10399657 is about 218.2761769207.

The spelling of 10399657 in words is "ten million, three hundred ninety-nine thousand, six hundred fifty-seven".