394979026 has 24 divisors (see below), whose sum is σ = 652100004. Its totient is φ = 179300160.

The previous prime is 394978999. The next prime is 394979041. The reversal of 394979026 is 620979493.

It can be written as a sum of positive squares in 6 ways, for example, as 17648401 + 377330625 = 4201^2 + 19425^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11040 + ... + 30196.

Almost surely, 2^394979026 is an apocalyptic number.

394979026 is a deficient number, since it is larger than the sum of its proper divisors (257120978).

394979026 is a wasteful number, since it uses less digits than its factorization.

394979026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19246 (or 19233 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 394979026 is about 19874.0792491124. The cubic root of 394979026 is about 733.7104053000.

The spelling of 394979026 in words is "three hundred ninety-four million, nine hundred seventy-nine thousand, twenty-six".