11920913 has 2 divisors, whose sum is σ = 11920914. Its totient is φ = 11920912.

The previous prime is 11920903. The next prime is 11920949. The reversal of 11920913 is 31902911.

11920913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11785489 + 135424 = 3433^2 + 368^2 .

It is a cyclic number.

It is not a de Polignac number, because 11920913 - 2⁴ = 11920897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11920903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5960456 + 5960457.

It is an arithmetic number, because the mean of its divisors is an integer number (5960457).

Almost surely, 2^11920913 is an apocalyptic number.

It is an amenable number.

11920913 is a deficient number, since it is larger than the sum of its proper divisors (1).

11920913 is an equidigital number, since it uses as much as digits as its factorization.

11920913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 11920913 is about 3452.6675194695. The cubic root of 11920913 is about 228.4387838830.

The spelling of 11920913 in words is "eleven million, nine hundred twenty thousand, nine hundred thirteen".