394136750 has 32 divisors (see below), whose sum is σ = 843231168. Its totient is φ = 135132000.

The previous prime is 394136711. The next prime is 394136773. The reversal of 394136750 is 57631493.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110861 + ... + 114360.

It is an arithmetic number, because the mean of its divisors is an integer number (26350974).

Almost surely, 2^394136750 is an apocalyptic number.

394136750 is an abundant number, since it is smaller than the sum of its proper divisors (449094418).

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

394136750 is a wasteful number, since it uses less digits than its factorization.

394136750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225245 (or 225235 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 394136750 is about 19852.8776251706. The cubic root of 394136750 is about 733.1884987154.

The spelling of 394136750 in words is "three hundred ninety-four million, one hundred thirty-six thousand, seven hundred fifty".