11400003 has 12 divisors (see below), whose sum is σ = 16499808. Its totient is φ = 7584720.

The previous prime is 11399989. The next prime is 11400017. The reversal of 11400003 is 30000411.

It is an interprime number because it is at equal distance from previous prime (11399989) and next prime (11400017).

It is not a de Polignac number, because 11400003 - 2⁶ = 11399939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11400043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5158 + ... + 7028.

It is an arithmetic number, because the mean of its divisors is an integer number (1374984).

Almost surely, 2^11400003 is an apocalyptic number.

11400003 is a deficient number, since it is larger than the sum of its proper divisors (5099805).

11400003 is a wasteful number, since it uses less digits than its factorization.

11400003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554 (or 2551 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 11400003 is about 3376.3890474885. The cubic root of 11400003 is about 225.0617312100.

Adding to 11400003 its reverse (30000411), we get a palindrome (41400414).

The spelling of 11400003 in words is "eleven million, four hundred thousand, three".