393740372 has 6 divisors (see below), whose sum is σ = 689045658. Its totient is φ = 196870184.

The previous prime is 393740371. The next prime is 393740387. The reversal of 393740372 is 273047393.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 197852356 + 195888016 = 14066^2 + 13996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393740371) 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 as a sum of consecutive naturals, namely, 49217543 + ... + 49217550.

It is an arithmetic number, because the mean of its divisors is an integer number (114840943).

Almost surely, 2^393740372 is an apocalyptic number.

It is an amenable number.

393740372 is a deficient number, since it is larger than the sum of its proper divisors (295305286).

393740372 is a wasteful number, since it uses less digits than its factorization.

393740372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98435097 (or 98435095 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 38.

The square root of 393740372 is about 19842.8922287050. The cubic root of 393740372 is about 732.9426303552.

The spelling of 393740372 in words is "three hundred ninety-three million, seven hundred forty thousand, three hundred seventy-two".