534390823 has 4 divisors (see below), whose sum is σ = 534446928. Its totient is φ = 534334720.

The previous prime is 534390793. The next prime is 534390833. The reversal of 534390823 is 328093435.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-534390823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534390833) 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, 9811 + ... + 34132.

It is an arithmetic number, because the mean of its divisors is an integer number (133611732).

Almost surely, 2^534390823 is an apocalyptic number.

534390823 is the 12357-th centered heptagonal number.

534390823 is a deficient number, since it is larger than the sum of its proper divisors (56105).

534390823 is a wasteful number, since it uses less digits than its factorization.

534390823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56104.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 534390823 is about 23116.8947525398. The cubic root of 534390823 is about 811.4959010279.

The spelling of 534390823 in words is "five hundred thirty-four million, three hundred ninety thousand, eight hundred twenty-three".