397745376 has 192 divisors, whose sum is σ = 1255919616. Its totient is φ = 107827200.

The previous prime is 397745323. The next prime is 397745377. The reversal of 397745376 is 673547793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397745377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1270596 + ... + 1270908.

It is an arithmetic number, because the mean of its divisors is an integer number (6541248).

Almost surely, 2^397745376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397745376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627959808).

397745376 is an abundant number, since it is smaller than the sum of its proper divisors (858174240).

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

397745376 is a wasteful number, since it uses less digits than its factorization.

397745376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 417 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 51.

The square root of 397745376 is about 19943.5547483391. The cubic root of 397745376 is about 735.4193395878.

It can be divided in two parts, 39774 and 5376, that added together give a triangular number (45150 = T₃₀₀).

The spelling of 397745376 in words is "three hundred ninety-seven million, seven hundred forty-five thousand, three hundred seventy-six".