11920906 has 4 divisors (see below), whose sum is σ = 17881362. Its totient is φ = 5960452.

The previous prime is 11920903. The next prime is 11920913. The reversal of 11920906 is 60902911.

11920906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 9247681 + 2673225 = 3041^2 + 1635^2 .

It is not an unprimeable number, because it can be changed into a prime (11920901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2980225 + ... + 2980228.

Almost surely, 2^11920906 is an apocalyptic number.

11920906 is a deficient number, since it is larger than the sum of its proper divisors (5960456).

11920906 is an equidigital number, since it uses as much as digits as its factorization.

11920906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960455.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 11920906 is about 3452.6665057604. Note that the first 3 decimals coincide. The cubic root of 11920906 is about 228.4387391696.

It can be divided in two parts, 119 and 20906, that added together give a square (21025 = 145²).

The spelling of 11920906 in words is "eleven million, nine hundred twenty thousand, nine hundred six".