397084380 has 192 divisors, whose sum is σ = 1409909760. Its totient is φ = 81100800.

The previous prime is 397084339. The next prime is 397084393. The reversal of 397084380 is 83480793.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 281116 + ... + 282524.

It is an arithmetic number, because the mean of its divisors is an integer number (7343280).

Almost surely, 2^397084380 is an apocalyptic number.

397084380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397084380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704954880).

397084380 is an abundant number, since it is smaller than the sum of its proper divisors (1012825380).

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

397084380 is a wasteful number, since it uses less digits than its factorization.

397084380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 397084380 is about 19926.9761880723. The cubic root of 397084380 is about 735.0117264083.

The spelling of 397084380 in words is "three hundred ninety-seven million, eighty-four thousand, three hundred eighty".