2220429 has 4 divisors (see below), whose sum is σ = 2960576. Its totient is φ = 1480284.

The previous prime is 2220419. The next prime is 2220431. The reversal of 2220429 is 9240222.

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 not a de Polignac number, because 2220429 - 2⁷ = 2220301 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220409) 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, 370069 + ... + 370074.

It is an arithmetic number, because the mean of its divisors is an integer number (740144).

2^2220429 is an apocalyptic number.

It is an amenable number.

2220429 is a deficient number, since it is larger than the sum of its proper divisors (740147).

2220429 is an equidigital number, since it uses as much as digits as its factorization.

2220429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740146.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2220429 is about 1490.1103985947. The cubic root of 2220429 is about 130.4604774548.

The spelling of 2220429 in words is "two million, two hundred twenty thousand, four hundred twenty-nine".