11980749 has 16 divisors (see below), whose sum is σ = 17487360. Its totient is φ = 7235760.

The previous prime is 11980693. The next prime is 11980763. The reversal of 11980749 is 94708911.

It is a happy number.

It is not a de Polignac number, because 11980749 - 2¹³ = 11972557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11990749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14074 + ... + 14900.

It is an arithmetic number, because the mean of its divisors is an integer number (1092960).

Almost surely, 2^11980749 is an apocalyptic number.

It is an amenable number.

11980749 is a deficient number, since it is larger than the sum of its proper divisors (5506611).

11980749 is a wasteful number, since it uses less digits than its factorization.

11980749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 11980749 is about 3461.3218573256. The cubic root of 11980749 is about 228.8203557961.

The spelling of 11980749 in words is "eleven million, nine hundred eighty thousand, seven hundred forty-nine".