10399457 has 4 divisors (see below), whose sum is σ = 10407060. Its totient is φ = 10391856.

The previous prime is 10399451. The next prime is 10399531. The reversal of 10399457 is 75499301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75499301 = 73 ⋅1034237.

It can be written as a sum of positive squares in 2 ways, for example, as 8737936 + 1661521 = 2956^2 + 1289^2 .

It is a cyclic number.

It is not a de Polignac number, because 10399457 - 2⁸ = 10399201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10399457.

It is not an unprimeable number, because it can be changed into a prime (10399451) 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, 1118 + ... + 4695.

It is an arithmetic number, because the mean of its divisors is an integer number (2601765).

Almost surely, 2^10399457 is an apocalyptic number.

It is an amenable number.

10399457 is a deficient number, since it is larger than the sum of its proper divisors (7603).

10399457 is an equidigital number, since it uses as much as digits as its factorization.

10399457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7602.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 10399457 is about 3224.8189096444. The cubic root of 10399457 is about 218.2747776593.

The spelling of 10399457 in words is "ten million, three hundred ninety-nine thousand, four hundred fifty-seven".