8978473 has 4 divisors (see below), whose sum is σ = 10261120. Its totient is φ = 7695828.

The previous prime is 8978471. The next prime is 8978479. The reversal of 8978473 is 3748798.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3748798 = 2 ⋅1874399.

It is not a de Polignac number, because 8978473 - 2¹ = 8978471 is a prime.

It is a super-2 number, since 2×8978473² = 161225954823458, which contains 22 as substring.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 641313 + ... + 641326.

It is an arithmetic number, because the mean of its divisors is an integer number (2565280).

Almost surely, 2^8978473 is an apocalyptic number.

It is an amenable number.

8978473 is a deficient number, since it is larger than the sum of its proper divisors (1282647).

8978473 is a wasteful number, since it uses less digits than its factorization.

8978473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282646.

The product of its digits is 338688, while the sum is 46.

The square root of 8978473 is about 2996.4100186723. The cubic root of 8978473 is about 207.8424055893.

The spelling of 8978473 in words is "eight million, nine hundred seventy-eight thousand, four hundred seventy-three".