11881429 has 4 divisors (see below), whose sum is σ = 13578784. Its totient is φ = 10184076.

The previous prime is 11881427. The next prime is 11881439. The reversal of 11881429 is 92418811.

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 not a de Polignac number, because 11881429 - 2¹ = 11881427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11881394 and 11881403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11881421) 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, 848667 + ... + 848680.

It is an arithmetic number, because the mean of its divisors is an integer number (3394696).

Almost surely, 2^11881429 is an apocalyptic number.

It is an amenable number.

11881429 is a deficient number, since it is larger than the sum of its proper divisors (1697355).

11881429 is an equidigital number, since it uses as much as digits as its factorization.

11881429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697354.

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

The square root of 11881429 is about 3446.9448791647. The cubic root of 11881429 is about 228.1862961325.

The spelling of 11881429 in words is "eleven million, eight hundred eighty-one thousand, four hundred twenty-nine".