11397903 has 16 divisors (see below), whose sum is σ = 17300736. Its totient is φ = 6607040.

The previous prime is 11397833. The next prime is 11397907. The reversal of 11397903 is 30979311.

11397903 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11397903 - 2⁹ = 11397391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11397907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6750 + ... + 8267.

It is an arithmetic number, because the mean of its divisors is an integer number (1081296).

Almost surely, 2^11397903 is an apocalyptic number.

11397903 is a deficient number, since it is larger than the sum of its proper divisors (5902833).

11397903 is a wasteful number, since it uses less digits than its factorization.

11397903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15054.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 11397903 is about 3376.0780500456. The cubic root of 11397903 is about 225.0479107850.

The spelling of 11397903 in words is "eleven million, three hundred ninety-seven thousand, nine hundred three".