11429881 has 4 divisors (see below), whose sum is σ = 11517264. Its totient is φ = 11342500.

The previous prime is 11429879. The next prime is 11429897. The reversal of 11429881 is 18892411.

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.

It is a cyclic number.

It is not a de Polignac number, because 11429881 - 2¹ = 11429879 is a prime.

It is a super-2 number, since 2×11429881² = 261284359348322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11429861) 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, 43495 + ... + 43756.

It is an arithmetic number, because the mean of its divisors is an integer number (2879316).

Almost surely, 2^11429881 is an apocalyptic number.

It is an amenable number.

11429881 is a deficient number, since it is larger than the sum of its proper divisors (87383).

11429881 is an equidigital number, since it uses as much as digits as its factorization.

11429881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87382.

The product of its digits is 4608, while the sum is 34.

The square root of 11429881 is about 3380.8107015921. The cubic root of 11429881 is about 225.2581793554.

The spelling of 11429881 in words is "eleven million, four hundred twenty-nine thousand, eight hundred eighty-one".