394673452890 has 32 divisors (see below), whose sum is σ = 979878919680. Its totient is φ = 101617072704.

The previous prime is 394673452883. The next prime is 394673452891. The reversal of 394673452890 is 98254376493.

It is a super-2 number, since 2×394673452890² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (394673452891) 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, 226822954 + ... + 226824693.

It is an arithmetic number, because the mean of its divisors is an integer number (30621216240).

Almost surely, 2^394673452890 is an apocalyptic number.

394673452890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

394673452890 is an abundant number, since it is smaller than the sum of its proper divisors (585205466790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394673452890 is a wasteful number, since it uses less digits than its factorization.

394673452890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453647686.

The product of its (nonzero) digits is 39191040, while the sum is 60.

The spelling of 394673452890 in words is "three hundred ninety-four billion, six hundred seventy-three million, four hundred fifty-two thousand, eight hundred ninety".