397201801 has 2 divisors, whose sum is σ = 397201802. Its totient is φ = 397201800.

The previous prime is 397201781. The next prime is 397201807. The reversal of 397201801 is 108102793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327646201 + 69555600 = 18101^2 + 8340^2 .

It is a cyclic number.

It is not a de Polignac number, because 397201801 - 2¹¹ = 397199753 is a prime.

It is not a weakly prime, because it can be changed into another prime (397201807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198600900 + 198600901.

It is an arithmetic number, because the mean of its divisors is an integer number (198600901).

Almost surely, 2^397201801 is an apocalyptic number.

It is an amenable number.

397201801 is a deficient number, since it is larger than the sum of its proper divisors (1).

397201801 is an equidigital number, since it uses as much as digits as its factorization.

397201801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 397201801 is about 19929.9222527335. The cubic root of 397201801 is about 735.0841688669.

The spelling of 397201801 in words is "three hundred ninety-seven million, two hundred one thousand, eight hundred one".