11920159 has 4 divisors (see below), whose sum is σ = 12197416. Its totient is φ = 11642904.

The previous prime is 11920157. The next prime is 11920199. The reversal of 11920159 is 95102911.

11920159 = 1407² + 1408² + ... + 1412².

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 11920159 - 2¹ = 11920157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11920157) 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, 138564 + ... + 138649.

It is an arithmetic number, because the mean of its divisors is an integer number (3049354).

Almost surely, 2^11920159 is an apocalyptic number.

11920159 is a deficient number, since it is larger than the sum of its proper divisors (277257).

11920159 is an equidigital number, since it uses as much as digits as its factorization.

11920159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277256.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 11920159 is about 3452.5583268064. The cubic root of 11920159 is about 228.4339675160.

The spelling of 11920159 in words is "eleven million, nine hundred twenty thousand, one hundred fifty-nine".