11999973 has 8 divisors (see below), whose sum is σ = 16015968. Its totient is φ = 7991984.

The previous prime is 11999941. The next prime is 11999987. The reversal of 11999973 is 37999911.

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 11999973 - 2⁵ = 11999941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11999903) 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, 4990 + ... + 6992.

It is an arithmetic number, because the mean of its divisors is an integer number (2001996).

Almost surely, 2^11999973 is an apocalyptic number.

It is an amenable number.

11999973 is a deficient number, since it is larger than the sum of its proper divisors (4015995).

11999973 is a wasteful number, since it uses less digits than its factorization.

11999973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003.

The product of its digits is 137781, while the sum is 48.

The square root of 11999973 is about 3464.0977180212. The cubic root of 11999973 is about 228.9426768034.

Adding to 11999973 its sum of digits (48), we get a palindrome (12000021).

The spelling of 11999973 in words is "eleven million, nine hundred ninety-nine thousand, nine hundred seventy-three".