11479981 has 8 divisors (see below), whose sum is σ = 12337920. Its totient is φ = 10642368.

The previous prime is 11479957. The next prime is 11480069. The reversal of 11479981 is 18997411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11479981 - 2¹⁵ = 11447213 is a prime.

It is a super-2 number, since 2×11479981² = 263579927520722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11479931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3901 + ... + 6178.

It is an arithmetic number, because the mean of its divisors is an integer number (1542240).

Almost surely, 2^11479981 is an apocalyptic number.

It is an amenable number.

11479981 is a deficient number, since it is larger than the sum of its proper divisors (857939).

11479981 is a wasteful number, since it uses less digits than its factorization.

11479981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10163.

The product of its digits is 18144, while the sum is 40.

The square root of 11479981 is about 3388.2120653820. The cubic root of 11479981 is about 225.5868204518.

The spelling of 11479981 in words is "eleven million, four hundred seventy-nine thousand, nine hundred eighty-one".