494406819 has 24 divisors (see below), whose sum is σ = 755966640. Its totient is φ = 310830912.

The previous prime is 494406811. The next prime is 494406851. The reversal of 494406819 is 918604494.

It is not a de Polignac number, because 494406819 - 2³ = 494406811 is a prime.

It is a super-2 number, since 2×494406819² = 488876205347397522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (494406811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10804 + ... + 33249.

It is an arithmetic number, because the mean of its divisors is an integer number (31498610).

Almost surely, 2^494406819 is an apocalyptic number.

494406819 is a deficient number, since it is larger than the sum of its proper divisors (261559821).

494406819 is a wasteful number, since it uses less digits than its factorization.

494406819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44131 (or 44128 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 494406819 is about 22235.2607135603. The cubic root of 494406819 is about 790.7298809220.

The spelling of 494406819 in words is "four hundred ninety-four million, four hundred six thousand, eight hundred nineteen".