393707742 has 16 divisors (see below), whose sum is σ = 805728000. Its totient is φ = 128183832.

The previous prime is 393707737. The next prime is 393707749. The reversal of 393707742 is 247707393.

It is a super-2 number, since 2×393707742² = 310011572221477128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 393707694 and 393707703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393707749) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 762742 + ... + 763257.

It is an arithmetic number, because the mean of its divisors is an integer number (50358000).

Almost surely, 2^393707742 is an apocalyptic number.

393707742 is an abundant number, since it is smaller than the sum of its proper divisors (412020258).

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

393707742 is a wasteful number, since it uses less digits than its factorization.

393707742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526047.

The product of its (nonzero) digits is 222264, while the sum is 42.

The square root of 393707742 is about 19842.0700029004. The cubic root of 393707742 is about 732.9223830209.

The spelling of 393707742 in words is "three hundred ninety-three million, seven hundred seven thousand, seven hundred forty-two".