397596550 has 48 divisors (see below), whose sum is σ = 799917552. Its totient is φ = 146160000.

The previous prime is 397596541. The next prime is 397596569. The reversal of 397596550 is 55695793.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 397596494 and 397596503.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 161932 + ... + 164368.

It is an arithmetic number, because the mean of its divisors is an integer number (16664949).

Almost surely, 2^397596550 is an apocalyptic number.

397596550 is an abundant number, since it is smaller than the sum of its proper divisors (402321002).

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

397596550 is a wasteful number, since it uses less digits than its factorization.

397596550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713 (or 2708 counting only the distinct ones).

The product of its (nonzero) digits is 1275750, while the sum is 49.

The square root of 397596550 is about 19939.8232188753. The cubic root of 397596550 is about 735.3276031997.

The spelling of 397596550 in words is "three hundred ninety-seven million, five hundred ninety-six thousand, five hundred fifty".