397383040 has 32 divisors (see below), whose sum is σ = 949995360. Its totient is φ = 158952960.

The previous prime is 397383037. The next prime is 397383059. The reversal of 397383040 is 40383793.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309816 + ... + 311095.

It is an arithmetic number, because the mean of its divisors is an integer number (29687355).

Almost surely, 2^397383040 is an apocalyptic number.

It is an amenable number.

397383040 is an abundant number, since it is smaller than the sum of its proper divisors (552612320).

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

397383040 is an equidigital number, since it uses as much as digits as its factorization.

397383040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620930 (or 620918 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 397383040 is about 19934.4686410248. The cubic root of 397383040 is about 735.1959555886.

It can be divided in two parts, 39738 and 3040, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 397383040 in words is "three hundred ninety-seven million, three hundred eighty-three thousand, forty".