11903943 has 8 divisors (see below), whose sum is σ = 16063488. Its totient is φ = 7840184.

The previous prime is 11903939. The next prime is 11903951. The reversal of 11903943 is 34930911.

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 11903943 - 2² = 11903939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11903943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11903933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23655 + ... + 24152.

It is an arithmetic number, because the mean of its divisors is an integer number (2007936).

Almost surely, 2^11903943 is an apocalyptic number.

11903943 is a deficient number, since it is larger than the sum of its proper divisors (4159545).

11903943 is an equidigital number, since it uses as much as digits as its factorization.

11903943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47893.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 11903943 is about 3450.2091240967. The cubic root of 11903943 is about 228.3303344957.

The spelling of 11903943 in words is "eleven million, nine hundred three thousand, nine hundred forty-three".