8978451 has 4 divisors (see below), whose sum is σ = 11971272. Its totient is φ = 5985632.

The previous prime is 8978449. The next prime is 8978471. The reversal of 8978451 is 1548798.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8978451 - 2¹ = 8978449 is a prime.

It is a super-2 number, since 2×8978451² = 161225164718802, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1496406 + ... + 1496411.

It is an arithmetic number, because the mean of its divisors is an integer number (2992818).

Almost surely, 2^8978451 is an apocalyptic number.

8978451 is a deficient number, since it is larger than the sum of its proper divisors (2992821).

8978451 is a wasteful number, since it uses less digits than its factorization.

8978451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992820.

The product of its digits is 80640, while the sum is 42.

The square root of 8978451 is about 2996.4063476104. The cubic root of 8978451 is about 207.8422358301.

The spelling of 8978451 in words is "eight million, nine hundred seventy-eight thousand, four hundred fifty-one".