2979261 has 10 divisors (see below), whose sum is σ = 4450622. Its totient is φ = 1986120.

The previous prime is 2979253. The next prime is 2979271. The reversal of 2979261 is 1629792.

It can be written as a sum of positive squares in only one way, i.e., 1610361 + 1368900 = 1269^2 + 1170^2 .

It is not a de Polignac number, because 2979261 - 2³ = 2979253 is a prime.

It is a super-2 number, since 2×2979261² = 17751992212242, which contains 22 as substring.

It is a Duffinian number.

2979261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2979271) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18310 + ... + 18471.

2^2979261 is an apocalyptic number.

It is an amenable number.

2979261 is a deficient number, since it is larger than the sum of its proper divisors (1471361).

2979261 is an equidigital number, since it uses as much as digits as its factorization.

2979261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36793 (or 36784 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 2979261 is about 1726.0535912885. The cubic root of 2979261 is about 143.8918458723.

It can be divided in two parts, 2979 and 261, that added together give a triangular number (3240 = T₈₀).

The spelling of 2979261 in words is "two million, nine hundred seventy-nine thousand, two hundred sixty-one".