398828894 has 8 divisors (see below), whose sum is σ = 612834768. Its totient is φ = 194550640.

The previous prime is 398828873. The next prime is 398828897. The reversal of 398828894 is 498828893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398828897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2431802 + ... + 2431965.

It is an arithmetic number, because the mean of its divisors is an integer number (76604346).

Almost surely, 2^398828894 is an apocalyptic number.

398828894 is a deficient number, since it is larger than the sum of its proper divisors (214005874).

398828894 is a wasteful number, since it uses less digits than its factorization.

398828894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863810.

The product of its digits is 7962624, while the sum is 59.

The square root of 398828894 is about 19970.7008890524. The cubic root of 398828894 is about 736.0865316010.

Subtracting 398828894 from its reverse (498828893), we obtain a palindrome (99999999).

The spelling of 398828894 in words is "three hundred ninety-eight million, eight hundred twenty-eight thousand, eight hundred ninety-four".