921423854 has 8 divisors (see below), whose sum is σ = 1488453960. Its totient is φ = 425272536.

The previous prime is 921423803. The next prime is 921423859. The reversal of 921423854 is 458324129.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921423859) 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, 17719664 + ... + 17719715.

It is an arithmetic number, because the mean of its divisors is an integer number (186056745).

Almost surely, 2^921423854 is an apocalyptic number.

921423854 is a deficient number, since it is larger than the sum of its proper divisors (567030106).

921423854 is a wasteful number, since it uses less digits than its factorization.

921423854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35439394.

The product of its digits is 69120, while the sum is 38.

The square root of 921423854 is about 30354.9642398076. The cubic root of 921423854 is about 973.0903155987.

The spelling of 921423854 in words is "nine hundred twenty-one million, four hundred twenty-three thousand, eight hundred fifty-four".