8978481 has 6 divisors (see below), whose sum is σ = 12968930. Its totient is φ = 5985648.

The previous prime is 8978479. The next prime is 8978491. The reversal of 8978481 is 1848798.

It can be written as a sum of positive squares in only one way, i.e., 8946081 + 32400 = 2991^2 + 180^2 .

It is not a de Polignac number, because 8978481 - 2¹ = 8978479 is a prime.

It is a super-2 number, since 2×8978481² = 161226242134722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8978471) 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, 498796 + ... + 498813.

Almost surely, 2^8978481 is an apocalyptic number.

It is an amenable number.

8978481 is a deficient number, since it is larger than the sum of its proper divisors (3990449).

8978481 is a wasteful number, since it uses less digits than its factorization.

8978481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997615 (or 997612 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 8978481 is about 2996.4113536028. The cubic root of 8978481 is about 207.8424673199.

The spelling of 8978481 in words is "eight million, nine hundred seventy-eight thousand, four hundred eighty-one".