11801959 has 4 divisors (see below), whose sum is σ = 12709816. Its totient is φ = 10894104.

The previous prime is 11801941. The next prime is 11801969. The reversal of 11801959 is 95910811.

11801959 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, and also an emirpimes, since its reverse is a distinct semiprime: 95910811 = 7649 ⋅12539.

It is not a de Polignac number, because 11801959 - 2¹¹ = 11799911 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 (11801939) 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, 453909 + ... + 453934.

It is an arithmetic number, because the mean of its divisors is an integer number (3177454).

Almost surely, 2^11801959 is an apocalyptic number.

11801959 is a deficient number, since it is larger than the sum of its proper divisors (907857).

11801959 is an equidigital number, since it uses as much as digits as its factorization.

11801959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907856.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 11801959 is about 3435.3979391040. The cubic root of 11801959 is about 227.6764094829.

The spelling of 11801959 in words is "eleven million, eight hundred one thousand, nine hundred fifty-nine".