398349179 has 4 divisors (see below), whose sum is σ = 405100920. Its totient is φ = 391597440.

The previous prime is 398349157. The next prime is 398349181. The reversal of 398349179 is 971943893.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398349179 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 398349179.

It is not an unprimeable number, because it can be changed into a prime (398349139) 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, 3375782 + ... + 3375899.

It is an arithmetic number, because the mean of its divisors is an integer number (101275230).

Almost surely, 2^398349179 is an apocalyptic number.

398349179 is a deficient number, since it is larger than the sum of its proper divisors (6751741).

398349179 is an equidigital number, since it uses as much as digits as its factorization.

398349179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6751740.

The product of its digits is 1469664, while the sum is 53.

The square root of 398349179 is about 19958.6868054990. The cubic root of 398349179 is about 735.7912893507.

The spelling of 398349179 in words is "three hundred ninety-eight million, three hundred forty-nine thousand, one hundred seventy-nine".