397767353344 has 33 divisors (see below), whose sum is σ = 795186608377. Its totient is φ = 198873585664.

The previous prime is 397767353341. The next prime is 397767353363. The reversal of 397767353344 is 443353767793.

The square root of 397767353344 is 630688.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 203321631744 + 194445721600 = 450912^2 + 440960^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397767353341) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 20172162 + ... + 20191870.

Almost surely, 2^397767353344 is an apocalyptic number.

397767353344 is the 630688-th square number.

It is an amenable number.

397767353344 is a deficient number, since it is larger than the sum of its proper divisors (397419255033).

397767353344 is an frugal number, since it uses more digits than its factorization.

397767353344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39438 (or 19711 counting only the distinct ones).

The product of its digits is 120022560, while the sum is 61.

The spelling of 397767353344 in words is "three hundred ninety-seven billion, seven hundred sixty-seven million, three hundred fifty-three thousand, three hundred forty-four".