2979147 has 4 divisors (see below), whose sum is σ = 3972200. Its totient is φ = 1986096.

The previous prime is 2979139. The next prime is 2979149. The reversal of 2979147 is 7419792.

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

It is not a de Polignac number, because 2979147 - 2³ = 2979139 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2979149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496522 + ... + 496527.

It is an arithmetic number, because the mean of its divisors is an integer number (993050).

2^2979147 is an apocalyptic number.

2979147 is a deficient number, since it is larger than the sum of its proper divisors (993053).

2979147 is an equidigital number, since it uses as much as digits as its factorization.

2979147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993052.

The product of its digits is 31752, while the sum is 39.

The square root of 2979147 is about 1726.0205676642. The cubic root of 2979147 is about 143.8900105313.

The spelling of 2979147 in words is "two million, nine hundred seventy-nine thousand, one hundred forty-seven".