398822579 has 8 divisors (see below), whose sum is σ = 404661600. Its totient is φ = 392993856.

The previous prime is 398822569. The next prime is 398822591. The reversal of 398822579 is 975228893.

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 398822579 - 2⁴ = 398822563 is a prime.

It is a super-2 number, since 2×398822579² = 318118899040422482, which contains 22 as substring.

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 398822579.

It is not an unprimeable number, because it can be changed into a prime (398822569) 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, 111314 + ... + 114840.

It is an arithmetic number, because the mean of its divisors is an integer number (50582700).

Almost surely, 2^398822579 is an apocalyptic number.

398822579 is a deficient number, since it is larger than the sum of its proper divisors (5839021).

398822579 is a wasteful number, since it uses less digits than its factorization.

398822579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149.

The product of its digits is 2177280, while the sum is 53.

The square root of 398822579 is about 19970.5427818074. The cubic root of 398822579 is about 736.0826465507.

The spelling of 398822579 in words is "three hundred ninety-eight million, eight hundred twenty-two thousand, five hundred seventy-nine".