8978427 has 12 divisors (see below), whose sum is σ = 13063960. Its totient is φ = 5941728.

The previous prime is 8978381. The next prime is 8978449. The reversal of 8978427 is 7248798.

It is not a de Polignac number, because 8978427 - 2⁸ = 8978171 is a prime.

It is a super-2 number, since 2×8978427² = 161224302788658, which contains 22 as substring.

It is a d-powerful number, because it can be written as 8³ + 9⁷ + 7² + 8³ + 4¹¹ + 2⁵ + 7² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8978327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2338 + ... + 4839.

Almost surely, 2^8978427 is an apocalyptic number.

8978427 is a deficient number, since it is larger than the sum of its proper divisors (4085533).

8978427 is a wasteful number, since it uses less digits than its factorization.

8978427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7322 (or 7319 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 8978427 is about 2996.4023428105. The cubic root of 8978427 is about 207.8420506379.

The spelling of 8978427 in words is "eight million, nine hundred seventy-eight thousand, four hundred twenty-seven".