8978398 has 16 divisors (see below), whose sum is σ = 15822576. Its totient is φ = 3767040.

The previous prime is 8978381. The next prime is 8978449. The reversal of 8978398 is 8938798.

It is a super-2 number, since 2×8978398² = 161223261292808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15411 + ... + 15982.

It is an arithmetic number, because the mean of its divisors is an integer number (988911).

Almost surely, 2^8978398 is an apocalyptic number.

8978398 is a deficient number, since it is larger than the sum of its proper divisors (6844178).

8978398 is a wasteful number, since it uses less digits than its factorization.

8978398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31419.

The product of its digits is 870912, while the sum is 52.

The square root of 8978398 is about 2996.3975036700. The cubic root of 8978398 is about 207.8418268635.

It can be divided in two parts, 89 and 78398, that added together give a palindrome (78487).

The spelling of 8978398 in words is "eight million, nine hundred seventy-eight thousand, three hundred ninety-eight".