398767894 has 16 divisors (see below), whose sum is σ = 684628128. Its totient is φ = 170644032.

The previous prime is 398767891. The next prime is 398767933. The reversal of 398767894 is 498767893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398767891) 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, 11559 + ... + 30514.

It is an arithmetic number, because the mean of its divisors is an integer number (42789258).

Almost surely, 2^398767894 is an apocalyptic number.

398767894 is a deficient number, since it is larger than the sum of its proper divisors (285860234).

398767894 is a wasteful number, since it uses less digits than its factorization.

398767894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42759.

The product of its digits is 18289152, while the sum is 61.

The square root of 398767894 is about 19969.1735933163. The cubic root of 398767894 is about 736.0490020836.

Subtracting 398767894 from its reverse (498767893), we obtain a palindrome (99999999).

The spelling of 398767894 in words is "three hundred ninety-eight million, seven hundred sixty-seven thousand, eight hundred ninety-four".