397161336 has 128 divisors (see below), whose sum is σ = 1204439040. Its totient is φ = 107481600.

The previous prime is 397161329. The next prime is 397161337. The reversal of 397161336 is 633161793.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 397161294 and 397161303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397161337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104526 + ... + 108258.

It is an arithmetic number, because the mean of its divisors is an integer number (9409680).

Almost surely, 2^397161336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397161336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602219520).

397161336 is an abundant number, since it is smaller than the sum of its proper divisors (807277704).

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

397161336 is a wasteful number, since it uses less digits than its factorization.

397161336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797 (or 3793 counting only the distinct ones).

The product of its digits is 61236, while the sum is 39.

The square root of 397161336 is about 19928.9070447930. The cubic root of 397161336 is about 735.0592057449.

The spelling of 397161336 in words is "three hundred ninety-seven million, one hundred sixty-one thousand, three hundred thirty-six".