7978443 has 8 divisors (see below), whose sum is σ = 11605056. Its totient is φ = 4835400.

The previous prime is 7978441. The next prime is 7978459. The reversal of 7978443 is 3448797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7978443 - 2¹ = 7978441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7978395 and 7978404.

It is not an unprimeable number, because it can be changed into a prime (7978441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120853 + ... + 120918.

It is an arithmetic number, because the mean of its divisors is an integer number (1450632).

Almost surely, 2^7978443 is an apocalyptic number.

7978443 is a deficient number, since it is larger than the sum of its proper divisors (3626613).

7978443 is a wasteful number, since it uses less digits than its factorization.

7978443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241785.

The product of its digits is 169344, while the sum is 42.

The square root of 7978443 is about 2824.6137789085. The cubic root of 7978443 is about 199.8201967357.

The spelling of 7978443 in words is "seven million, nine hundred seventy-eight thousand, four hundred forty-three".