397699140 has 48 divisors (see below), whose sum is σ = 1114686720. Its totient is φ = 105945600.

The previous prime is 397699097. The next prime is 397699151. The reversal of 397699140 is 41996793.

It is a self number, because there is not a number n which added to its sum of digits gives 397699140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69301 + ... + 74819.

It is an arithmetic number, because the mean of its divisors is an integer number (23222640).

Almost surely, 2^397699140 is an apocalyptic number.

397699140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397699140 is an abundant number, since it is smaller than the sum of its proper divisors (716987580).

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

397699140 is a wasteful number, since it uses less digits than its factorization.

397699140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6732 (or 6730 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 397699140 is about 19942.3955431638. The cubic root of 397699140 is about 735.3908421552.

The spelling of 397699140 in words is "three hundred ninety-seven million, six hundred ninety-nine thousand, one hundred forty".