394453626 has 48 divisors (see below), whose sum is σ = 919952640. Its totient is φ = 112425600.

The previous prime is 394453603. The next prime is 394453639. The reversal of 394453626 is 626354493.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139426 + ... + 142226.

It is an arithmetic number, because the mean of its divisors is an integer number (19165680).

Almost surely, 2^394453626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394453626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459976320).

394453626 is an abundant number, since it is smaller than the sum of its proper divisors (525499014).

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

394453626 is a wasteful number, since it uses less digits than its factorization.

394453626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3299 (or 3292 counting only the distinct ones).

The product of its digits is 466560, while the sum is 42.

The square root of 394453626 is about 19860.8566280511. The cubic root of 394453626 is about 733.3849344314.

It can be divided in two parts, 39445 and 3626, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 394453626 in words is "three hundred ninety-four million, four hundred fifty-three thousand, six hundred twenty-six".