397876852 has 6 divisors (see below), whose sum is σ = 696284498. Its totient is φ = 198938424.

The previous prime is 397876841. The next prime is 397876859. The reversal of 397876852 is 258678793.

It can be written as a sum of positive squares in only one way, i.e., 238208356 + 159668496 = 15434^2 + 12636^2 .

It is a junction number, because it is equal to n+sod(n) for n = 397876793 and 397876802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397876859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49734603 + ... + 49734610.

Almost surely, 2^397876852 is an apocalyptic number.

It is an amenable number.

397876852 is a deficient number, since it is larger than the sum of its proper divisors (298407646).

397876852 is a wasteful number, since it uses less digits than its factorization.

397876852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99469217 (or 99469215 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 55.

The square root of 397876852 is about 19946.8506787412. The cubic root of 397876852 is about 735.5003623955.

The spelling of 397876852 in words is "three hundred ninety-seven million, eight hundred seventy-six thousand, eight hundred fifty-two".