397200001 has 8 divisors (see below), whose sum is σ = 433461600. Its totient is φ = 360963840.

The previous prime is 397199953. The next prime is 397200017. The reversal of 397200001 is 100002793.

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

It is a cyclic number.

It is not a de Polignac number, because 397200001 - 2²¹ = 395102849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397200061) 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, 42970 + ... + 51388.

It is an arithmetic number, because the mean of its divisors is an integer number (54182700).

Almost surely, 2^397200001 is an apocalyptic number.

It is an amenable number.

397200001 is a deficient number, since it is larger than the sum of its proper divisors (36261599).

397200001 is a wasteful number, since it uses less digits than its factorization.

397200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12719.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 397200001 is about 19929.8770944529. The cubic root of 397200001 is about 735.0830584712.

Adding to 397200001 its reverse (100002793), we get a palindrome (497202794).

The spelling of 397200001 in words is "three hundred ninety-seven million, two hundred thousand, one".