11891429 has 8 divisors (see below), whose sum is σ = 13001472. Its totient is φ = 10786240.

The previous prime is 11891413. The next prime is 11891431. The reversal of 11891429 is 92419811.

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 11891429 - 2⁴ = 11891413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11891129) 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, 5612 + ... + 7434.

It is an arithmetic number, because the mean of its divisors is an integer number (1625184).

Almost surely, 2^11891429 is an apocalyptic number.

It is an amenable number.

11891429 is a deficient number, since it is larger than the sum of its proper divisors (1110043).

11891429 is a wasteful number, since it uses less digits than its factorization.

11891429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427.

The product of its digits is 5184, while the sum is 35.

The square root of 11891429 is about 3448.3951339717. The cubic root of 11891429 is about 228.2502958160.

The spelling of 11891429 in words is "eleven million, eight hundred ninety-one thousand, four hundred twenty-nine".