397286773 has 8 divisors (see below), whose sum is σ = 430574648. Its totient is φ = 364388544.

The previous prime is 397286767. The next prime is 397286777. The reversal of 397286773 is 377682793.

It can be written as a sum of positive squares in 4 ways, for example, as 50098084 + 347188689 = 7078^2 + 18633^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-397286773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397286773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397286777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95286 + ... + 99367.

It is an arithmetic number, because the mean of its divisors is an integer number (53821831).

Almost surely, 2^397286773 is an apocalyptic number.

It is an amenable number.

397286773 is a deficient number, since it is larger than the sum of its proper divisors (33287875).

397286773 is a wasteful number, since it uses less digits than its factorization.

397286773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194823.

The product of its digits is 2667168, while the sum is 52.

The square root of 397286773 is about 19932.0539082153. The cubic root of 397286773 is about 735.1365831294.

The spelling of 397286773 in words is "three hundred ninety-seven million, two hundred eighty-six thousand, seven hundred seventy-three".