397850880 has 432 divisors, whose sum is σ = 1569988224. Its totient is φ = 84049920.

The previous prime is 397850879. The next prime is 397850903. The reversal of 397850880 is 88058793.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9703660 + ... + 9703700.

It is an arithmetic number, because the mean of its divisors is an integer number (3634232).

Almost surely, 2^397850880 is an apocalyptic number.

397850880 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 397850880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784994112).

397850880 is an abundant number, since it is smaller than the sum of its proper divisors (1172137344).

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

397850880 is a wasteful number, since it uses less digits than its factorization.

397850880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 397850880 is about 19946.1996380263. The cubic root of 397850880 is about 735.4843584226.

The spelling of 397850880 in words is "three hundred ninety-seven million, eight hundred fifty thousand, eight hundred eighty".