397552365 has 24 divisors (see below), whose sum is σ = 787532928. Its totient is φ = 181738080.

The previous prime is 397552357. The next prime is 397552369. The reversal of 397552365 is 563255793.

It is a happy number.

397552365 is a `hidden beast` number, since 3 + 97 + 552 + 3 + 6 + 5 = 666.

It is not a de Polignac number, because 397552365 - 2³ = 397552357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 397552365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397552369) 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 23 ways as a sum of consecutive naturals, for example, 630721 + ... + 631350.

It is an arithmetic number, because the mean of its divisors is an integer number (32813872).

Almost surely, 2^397552365 is an apocalyptic number.

397552365 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

397552365 is a deficient number, since it is larger than the sum of its proper divisors (389980563).

397552365 is a wasteful number, since it uses less digits than its factorization.

397552365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262089 (or 1262086 counting only the distinct ones).

The product of its digits is 850500, while the sum is 45.

The square root of 397552365 is about 19938.7152294224. The cubic root of 397552365 is about 735.3003631463.

The spelling of 397552365 in words is "three hundred ninety-seven million, five hundred fifty-two thousand, three hundred sixty-five".