9978412 has 12 divisors (see below), whose sum is σ = 18221616. Its totient is φ = 4772240.

The previous prime is 9978383. The next prime is 9978427. The reversal of 9978412 is 2148799.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54139 + ... + 54322.

It is an arithmetic number, because the mean of its divisors is an integer number (1518468).

Almost surely, 2^9978412 is an apocalyptic number.

9978412 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

9978412 is a deficient number, since it is larger than the sum of its proper divisors (8243204).

9978412 is a wasteful number, since it uses less digits than its factorization.

9978412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108488 (or 108486 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 9978412 is about 3158.8624534791. The cubic root of 9978412 is about 215.2883241871.

It can be divided in two parts, 997 and 8412, that added together give a square (9409 = 97²).

The spelling of 9978412 in words is "nine million, nine hundred seventy-eight thousand, four hundred twelve".