6394904823 has 16 divisors (see below), whose sum is σ = 8566567776. Its totient is φ = 4243290240.

The previous prime is 6394904819. The next prime is 6394904833. The reversal of 6394904823 is 3284094936.

It is not a de Polignac number, because 6394904823 - 2² = 6394904819 is a prime.

It is a super-2 number, since 2×6394904823² = 81789615390457322658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6394904833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 878065 + ... + 885317.

It is an arithmetic number, because the mean of its divisors is an integer number (535410486).

Almost surely, 2^6394904823 is an apocalyptic number.

6394904823 is a deficient number, since it is larger than the sum of its proper divisors (2171662953).

6394904823 is a wasteful number, since it uses less digits than its factorization.

6394904823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8594.

The product of its (nonzero) digits is 1119744, while the sum is 48.

The square root of 6394904823 is about 79968.1488031329. The cubic root of 6394904823 is about 1856.1427002063.

The spelling of 6394904823 in words is "six billion, three hundred ninety-four million, nine hundred four thousand, eight hundred twenty-three".