2979121 has 4 divisors (see below), whose sum is σ = 3108672. Its totient is φ = 2849572.

The previous prime is 2979107. The next prime is 2979133. The reversal of 2979121 is 1219792.

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.

It is a cyclic number.

It is not a de Polignac number, because 2979121 - 2¹⁹ = 2454833 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2979191) 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, 64741 + ... + 64786.

It is an arithmetic number, because the mean of its divisors is an integer number (777168).

2^2979121 is an apocalyptic number.

It is an amenable number.

2979121 is a deficient number, since it is larger than the sum of its proper divisors (129551).

2979121 is a wasteful number, since it uses less digits than its factorization.

2979121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129550.

The product of its digits is 2268, while the sum is 31.

The square root of 2979121 is about 1726.0130358720. The cubic root of 2979121 is about 143.8895919382.

The spelling of 2979121 in words is "two million, nine hundred seventy-nine thousand, one hundred twenty-one".