11780369 has 4 divisors (see below), whose sum is σ = 11818560. Its totient is φ = 11742180.

The previous prime is 11780357. The next prime is 11780383. The reversal of 11780369 is 96308711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96308711 = 131 ⋅735181.

It is a cyclic number.

It is not a de Polignac number, because 11780369 - 2⁸ = 11780113 is a prime.

It is a super-2 number, since 2×11780369² = 277554187552322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11780309) 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, 18629 + ... + 19250.

It is an arithmetic number, because the mean of its divisors is an integer number (2954640).

Almost surely, 2^11780369 is an apocalyptic number.

It is an amenable number.

11780369 is a deficient number, since it is larger than the sum of its proper divisors (38191).

11780369 is an equidigital number, since it uses as much as digits as its factorization.

11780369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38190.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 11780369 is about 3432.2542155266. The cubic root of 11780369 is about 227.5374909030.

The spelling of 11780369 in words is "eleven million, seven hundred eighty thousand, three hundred sixty-nine".