398912065 has 8 divisors (see below), whose sum is σ = 481561920. Its totient is φ = 317218032.

The previous prime is 398912053. The next prime is 398912071. The reversal of 398912065 is 560219893.

It is a happy number.

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 398912065 - 2⁹ = 398911553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238035 + ... + 239704.

It is an arithmetic number, because the mean of its divisors is an integer number (60195240).

Almost surely, 2^398912065 is an apocalyptic number.

It is an amenable number.

398912065 is a deficient number, since it is larger than the sum of its proper divisors (82649855).

398912065 is a wasteful number, since it uses less digits than its factorization.

398912065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477911.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 398912065 is about 19972.7831060170. The cubic root of 398912065 is about 736.1376953947.

The spelling of 398912065 in words is "three hundred ninety-eight million, nine hundred twelve thousand, sixty-five".