891429423 has 8 divisors (see below), whose sum is σ = 1240249728. Its totient is φ = 568447704.

The previous prime is 891429389. The next prime is 891429491. The reversal of 891429423 is 324924198.

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

It is not a de Polignac number, because 891429423 - 2⁸ = 891429167 is a prime.

It is a super-2 number, since 2×891429423² = 1589292832380225858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891429223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6459565 + ... + 6459702.

It is an arithmetic number, because the mean of its divisors is an integer number (155031216).

Almost surely, 2^891429423 is an apocalyptic number.

891429423 is a deficient number, since it is larger than the sum of its proper divisors (348820305).

891429423 is a wasteful number, since it uses less digits than its factorization.

891429423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12919293.

The product of its digits is 124416, while the sum is 42.

The square root of 891429423 is about 29856.8153526125. The cubic root of 891429423 is about 962.4148632853.

The spelling of 891429423 in words is "eight hundred ninety-one million, four hundred twenty-nine thousand, four hundred twenty-three".