398941617 has 8 divisors (see below), whose sum is σ = 537189120. Its totient is φ = 263327600.

The previous prime is 398941597. The next prime is 398941619. The reversal of 398941617 is 716149893.

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 398941617 - 2⁷ = 398941489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398941619) 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, 658017 + ... + 658622.

It is an arithmetic number, because the mean of its divisors is an integer number (67148640).

Almost surely, 2^398941617 is an apocalyptic number.

It is an amenable number.

398941617 is a deficient number, since it is larger than the sum of its proper divisors (138247503).

398941617 is a wasteful number, since it uses less digits than its factorization.

398941617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316743.

The product of its digits is 326592, while the sum is 48.

The square root of 398941617 is about 19973.5228990782. The cubic root of 398941617 is about 736.1558730049.

The spelling of 398941617 in words is "three hundred ninety-eight million, nine hundred forty-one thousand, six hundred seventeen".