398848786 has 16 divisors (see below), whose sum is σ = 693108864. Its totient is φ = 168593184.

The previous prime is 398848777. The next prime is 398848787. The reversal of 398848786 is 687848893.

It is not an unprimeable number, because it can be changed into a prime (398848787) 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, 194110 + ... + 196153.

It is an arithmetic number, because the mean of its divisors is an integer number (43319304).

Almost surely, 2^398848786 is an apocalyptic number.

398848786 is a deficient number, since it is larger than the sum of its proper divisors (294260078).

398848786 is a wasteful number, since it uses less digits than its factorization.

398848786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390345.

The product of its digits is 18579456, while the sum is 61.

The square root of 398848786 is about 19971.1989124339. The cubic root of 398848786 is about 736.0987690877.

The spelling of 398848786 in words is "three hundred ninety-eight million, eight hundred forty-eight thousand, seven hundred eighty-six".