398798659 has 8 divisors (see below), whose sum is σ = 464369760. Its totient is φ = 335377536.

The previous prime is 398798639. The next prime is 398798681. The reversal of 398798659 is 956897893.

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 398798659 - 2⁷ = 398798531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398798659.

It is not an unprimeable number, because it can be changed into a prime (398798639) 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, 537094 + ... + 537835.

It is an arithmetic number, because the mean of its divisors is an integer number (58046220).

Almost surely, 2^398798659 is an apocalyptic number.

398798659 is a deficient number, since it is larger than the sum of its proper divisors (65571101).

398798659 is a wasteful number, since it uses less digits than its factorization.

398798659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074989.

The product of its digits is 29393280, while the sum is 64.

The square root of 398798659 is about 19969.9438907574. The cubic root of 398798659 is about 736.0679303587.

The spelling of 398798659 in words is "three hundred ninety-eight million, seven hundred ninety-eight thousand, six hundred fifty-nine".