2199429 has 6 divisors (see below), whose sum is σ = 3176966. Its totient is φ = 1466280.

The previous prime is 2199427. The next prime is 2199433. The reversal of 2199429 is 9249912.

It can be written as a sum of positive squares in only one way, i.e., 1954404 + 245025 = 1398^2 + 495^2 .

It is not a de Polignac number, because 2199429 - 2¹ = 2199427 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2199393 and 2199402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122182 + ... + 122199.

2^2199429 is an apocalyptic number.

It is an amenable number.

2199429 is a deficient number, since it is larger than the sum of its proper divisors (977537).

2199429 is a wasteful number, since it uses less digits than its factorization.

2199429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244387 (or 244384 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 2199429 is about 1483.0472008672. The cubic root of 2199429 is about 130.0478916249.

It can be divided in two parts, 2199 and 429, that added together give a triangular number (2628 = T₇₂).

The spelling of 2199429 in words is "two million, one hundred ninety-nine thousand, four hundred twenty-nine".