394240544 has 12 divisors (see below), whose sum is σ = 776161134. Its totient is φ = 197120256.

The previous prime is 394240507. The next prime is 394240549. The reversal of 394240544 is 445042493.

It can be written as a sum of positive squares in only one way, i.e., 384630544 + 9610000 = 19612^2 + 3100^2 .

It is not an unprimeable number, because it can be changed into a prime (394240549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159977 + ... + 6160040.

Almost surely, 2^394240544 is an apocalyptic number.

It is an amenable number.

394240544 is a deficient number, since it is larger than the sum of its proper divisors (381920590).

394240544 is a wasteful number, since it uses less digits than its factorization.

394240544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12320027 (or 12320019 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 394240544 is about 19855.4915325710. The cubic root of 394240544 is about 733.2528536107.

The spelling of 394240544 in words is "three hundred ninety-four million, two hundred forty thousand, five hundred forty-four".