402093823 has 8 divisors (see below), whose sum is σ = 405737856. Its totient is φ = 398463000.

The previous prime is 402093677. The next prime is 402093833. The reversal of 402093823 is 328390204.

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 402093823 - 2¹⁷ = 401962751 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 (402093833) 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, 63888 + ... + 69898.

It is an arithmetic number, because the mean of its divisors is an integer number (50717232).

Almost surely, 2^402093823 is an apocalyptic number.

402093823 is a deficient number, since it is larger than the sum of its proper divisors (3644033).

402093823 is a wasteful number, since it uses less digits than its factorization.

402093823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6605.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 402093823 is about 20052.2772522225. The cubic root of 402093823 is about 738.0896813286.

The spelling of 402093823 in words is "four hundred two million, ninety-three thousand, eight hundred twenty-three".