11972907 has 16 divisors (see below), whose sum is σ = 18672000. Its totient is φ = 7561512.

The previous prime is 11972899. The next prime is 11972953. The reversal of 11972907 is 70927911.

11972907 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 11972907 - 2³ = 11972899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11972407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11157 + ... + 12182.

It is an arithmetic number, because the mean of its divisors is an integer number (1167000).

Almost surely, 2^11972907 is an apocalyptic number.

11972907 is a deficient number, since it is larger than the sum of its proper divisors (6699093).

11972907 is a wasteful number, since it uses less digits than its factorization.

11972907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23367 (or 23361 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 11972907 is about 3460.1888676776. The cubic root of 11972907 is about 228.7704201067.

The spelling of 11972907 in words is "eleven million, nine hundred seventy-two thousand, nine hundred seven".