397793830 has 32 divisors (see below), whose sum is σ = 829854720. Its totient is φ = 134463840.

The previous prime is 397793821. The next prime is 397793831. The reversal of 397793830 is 38397793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397793831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35050 + ... + 44989.

It is an arithmetic number, because the mean of its divisors is an integer number (25932960).

Almost surely, 2^397793830 is an apocalyptic number.

397793830 is an abundant number, since it is smaller than the sum of its proper divisors (432060890).

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

397793830 is a wasteful number, since it uses less digits than its factorization.

397793830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80124.

The product of its (nonzero) digits is 857304, while the sum is 49.

The square root of 397793830 is about 19944.7694897685. The cubic root of 397793830 is about 735.4492017090.

The spelling of 397793830 in words is "three hundred ninety-seven million, seven hundred ninety-three thousand, eight hundred thirty".