22429149 has 4 divisors (see below), whose sum is σ = 29905536. Its totient is φ = 14952764.

The previous prime is 22429081. The next prime is 22429159. The reversal of 22429149 is 94192422.

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 22429149 - 2²⁰ = 21380573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22429159) 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, 3738189 + ... + 3738194.

It is an arithmetic number, because the mean of its divisors is an integer number (7476384).

Almost surely, 2^22429149 is an apocalyptic number.

It is an amenable number.

22429149 is a deficient number, since it is larger than the sum of its proper divisors (7476387).

22429149 is an equidigital number, since it uses as much as digits as its factorization.

22429149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7476386.

The product of its digits is 10368, while the sum is 33.

The square root of 22429149 is about 4735.9422504925. The cubic root of 22429149 is about 282.0141711102.

It can be divided in two parts, 22429 and 149, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 22429149 in words is "twenty-two million, four hundred twenty-nine thousand, one hundred forty-nine".