402052823 has 4 divisors (see below), whose sum is σ = 402297120. Its totient is φ = 401808528.

The previous prime is 402052817. The next prime is 402052831. The reversal of 402052823 is 328250204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402052823 - 2⁶ = 402052759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402052792 and 402052801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402052813) 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, 119663 + ... + 122976.

It is an arithmetic number, because the mean of its divisors is an integer number (100574280).

Almost surely, 2^402052823 is an apocalyptic number.

402052823 is a deficient number, since it is larger than the sum of its proper divisors (244297).

402052823 is a wasteful number, since it uses less digits than its factorization.

402052823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244296.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 402052823 is about 20051.2548983848. The cubic root of 402052823 is about 738.0645937298.

The spelling of 402052823 in words is "four hundred two million, fifty-two thousand, eight hundred twenty-three".