11403857 has 4 divisors (see below), whose sum is σ = 12004080. Its totient is φ = 10803636.

The previous prime is 11403839. The next prime is 11403859. The reversal of 11403857 is 75830411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75830411 = 47 ⋅1613413.

It is a cyclic number.

It is not a de Polignac number, because 11403857 - 2⁶ = 11403793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11403859) 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, 300083 + ... + 300120.

It is an arithmetic number, because the mean of its divisors is an integer number (3001020).

Almost surely, 2^11403857 is an apocalyptic number.

It is an amenable number.

11403857 is a deficient number, since it is larger than the sum of its proper divisors (600223).

11403857 is an equidigital number, since it uses as much as digits as its factorization.

11403857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600222.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 11403857 is about 3376.9597273287. The cubic root of 11403857 is about 225.0870905654.

The spelling of 11403857 in words is "eleven million, four hundred three thousand, eight hundred fifty-seven".