2921229 has 24 divisors (see below), whose sum is σ = 4555512. Its totient is φ = 1797120.

The previous prime is 2921227. The next prime is 2921239. The reversal of 2921229 is 9221292.

It can be written as a sum of positive squares in 4 ways, for example, as 38025 + 2883204 = 195^2 + 1698^2 .

It is not a de Polignac number, because 2921229 - 2¹ = 2921227 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9177 + ... + 9489.

It is an arithmetic number, because the mean of its divisors is an integer number (189813).

2^2921229 is an apocalyptic number.

It is an amenable number.

2921229 is a deficient number, since it is larger than the sum of its proper divisors (1634283).

2921229 is a wasteful number, since it uses less digits than its factorization.

2921229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 394 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 2921229 is about 1709.1603201572. The cubic root of 2921229 is about 142.9514399808.

It can be divided in two parts, 29212 and 29, that added together give a square (29241 = 171²).

The spelling of 2921229 in words is "two million, nine hundred twenty-one thousand, two hundred twenty-nine".