9978376 has 8 divisors (see below), whose sum is σ = 18709470. Its totient is φ = 4989184.

The previous prime is 9978361. The next prime is 9978383. The reversal of 9978376 is 6738799.

It can be written as a sum of positive squares in only one way, i.e., 9796900 + 181476 = 3130^2 + 426^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623641 + ... + 623656.

Almost surely, 2^9978376 is an apocalyptic number.

It is an amenable number.

9978376 is a deficient number, since it is larger than the sum of its proper divisors (8731094).

9978376 is a wasteful number, since it uses less digits than its factorization.

9978376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247303 (or 1247299 counting only the distinct ones).

The product of its digits is 571536, while the sum is 49.

The square root of 9978376 is about 3158.8567552202. The cubic root of 9978376 is about 215.2880652818.

The spelling of 9978376 in words is "nine million, nine hundred seventy-eight thousand, three hundred seventy-six".