393748492 has 12 divisors (see below), whose sum is σ = 729592920. Its totient is φ = 185293376.

The previous prime is 393748489. The next prime is 393748493. The reversal of 393748492 is 294847393.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (393748493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2895142 + ... + 2895277.

It is an arithmetic number, because the mean of its divisors is an integer number (60799410).

Almost surely, 2^393748492 is an apocalyptic number.

It is an amenable number.

393748492 is a deficient number, since it is larger than the sum of its proper divisors (335844428).

393748492 is a wasteful number, since it uses less digits than its factorization.

393748492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5790440 (or 5790438 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 393748492 is about 19843.0968349197. The cubic root of 393748492 is about 732.9476687457.

The spelling of 393748492 in words is "three hundred ninety-three million, seven hundred forty-eight thousand, four hundred ninety-two".