398446197 has 4 divisors (see below), whose sum is σ = 531261600. Its totient is φ = 265630796.

The previous prime is 398446177. The next prime is 398446201. The reversal of 398446197 is 791644893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 398446197 - 2¹⁴ = 398429813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398446157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66407697 + ... + 66407702.

It is an arithmetic number, because the mean of its divisors is an integer number (132815400).

Almost surely, 2^398446197 is an apocalyptic number.

It is an amenable number.

398446197 is a deficient number, since it is larger than the sum of its proper divisors (132815403).

398446197 is a wasteful number, since it uses less digits than its factorization.

398446197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132815402.

The product of its digits is 1306368, while the sum is 51.

The square root of 398446197 is about 19961.1171280567. The cubic root of 398446197 is about 735.8510185268.

The spelling of 398446197 in words is "three hundred ninety-eight million, four hundred forty-six thousand, one hundred ninety-seven".