2978443 has 8 divisors (see below), whose sum is σ = 3226608. Its totient is φ = 2733024.

The previous prime is 2978429. The next prime is 2978453. The reversal of 2978443 is 3448792.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2978443 - 2⁵ = 2978411 is a prime.

It is a super-2 number, since 2×2978443² = 17742245408498, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2978413) 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, 1980 + ... + 3142.

It is an arithmetic number, because the mean of its divisors is an integer number (403326).

2^2978443 is an apocalyptic number.

2978443 is a deficient number, since it is larger than the sum of its proper divisors (248165).

2978443 is a wasteful number, since it uses less digits than its factorization.

2978443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373.

The product of its digits is 48384, while the sum is 37.

The square root of 2978443 is about 1725.8166182999. The cubic root of 2978443 is about 143.8786754581.

The spelling of 2978443 in words is "two million, nine hundred seventy-eight thousand, four hundred forty-three".