9978453 has 6 divisors (see below), whose sum is σ = 14413334. Its totient is φ = 6652296.

The previous prime is 9978431. The next prime is 9978461. The reversal of 9978453 is 3548799.

It can be written as a sum of positive squares in only one way, i.e., 8398404 + 1580049 = 2898^2 + 1257^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9978453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9978399 and 9978408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9978653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 554350 + ... + 554367.

Almost surely, 2^9978453 is an apocalyptic number.

It is an amenable number.

9978453 is a deficient number, since it is larger than the sum of its proper divisors (4434881).

9978453 is a wasteful number, since it uses less digits than its factorization.

9978453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108723 (or 1108720 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 9978453 is about 3158.8689431504. The cubic root of 9978453 is about 215.2886190506.

The spelling of 9978453 in words is "nine million, nine hundred seventy-eight thousand, four hundred fifty-three".