2978549 has 8 divisors (see below), whose sum is σ = 3414528. Its totient is φ = 2545200.

The previous prime is 2978543. The next prime is 2978551. The reversal of 2978549 is 9458792.

It is a happy number.

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

It is not a de Polignac number, because 2978549 - 2⁴ = 2978533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978543) 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, 3899 + ... + 4599.

It is an arithmetic number, because the mean of its divisors is an integer number (426816).

2^2978549 is an apocalyptic number.

It is an amenable number.

2978549 is a deficient number, since it is larger than the sum of its proper divisors (435979).

2978549 is an equidigital number, since it uses as much as digits as its factorization.

2978549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315.

The product of its digits is 181440, while the sum is 44.

The square root of 2978549 is about 1725.8473281261. The cubic root of 2978549 is about 143.8803822737.

The spelling of 2978549 in words is "two million, nine hundred seventy-eight thousand, five hundred forty-nine".