11992403 has 4 divisors (see below), whose sum is σ = 12316560. Its totient is φ = 11668248.

The previous prime is 11992373. The next prime is 11992411. The reversal of 11992403 is 30429911.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11992403 - 2⁶ = 11992339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11992423) 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, 162023 + ... + 162096.

It is an arithmetic number, because the mean of its divisors is an integer number (3079140).

Almost surely, 2^11992403 is an apocalyptic number.

11992403 is a deficient number, since it is larger than the sum of its proper divisors (324157).

11992403 is an equidigital number, since it uses as much as digits as its factorization.

11992403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324156.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 11992403 is about 3463.0049090349. The cubic root of 11992403 is about 228.8945250111.

The spelling of 11992403 in words is "eleven million, nine hundred ninety-two thousand, four hundred three".