398884862 has 4 divisors (see below), whose sum is σ = 598327296. Its totient is φ = 199442430.

The previous prime is 398884861. The next prime is 398884891. The reversal of 398884862 is 268488893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 268488893 = 8831 ⋅30403.

It is a junction number, because it is equal to n+sod(n) for n = 398884798 and 398884807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398884861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99721214 + ... + 99721217.

It is an arithmetic number, because the mean of its divisors is an integer number (149581824).

Almost surely, 2^398884862 is an apocalyptic number.

398884862 is a deficient number, since it is larger than the sum of its proper divisors (199442434).

398884862 is a wasteful number, since it uses less digits than its factorization.

398884862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199442433.

The product of its digits is 5308416, while the sum is 56.

The square root of 398884862 is about 19972.1020926692. The cubic root of 398884862 is about 736.1209618748.

The spelling of 398884862 in words is "three hundred ninety-eight million, eight hundred eighty-four thousand, eight hundred sixty-two".