22069749 has 8 divisors (see below), whose sum is σ = 31689952. Its totient is φ = 13581360.

The previous prime is 22069709. The next prime is 22069753. The reversal of 22069749 is 94796022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22069749 - 2⁹ = 22069237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 565891 = 22069749 / (2 + 2 + 0 + 6 + 9 + 7 + 4 + 9).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22069709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282907 + ... + 282984.

It is an arithmetic number, because the mean of its divisors is an integer number (3961244).

Almost surely, 2^22069749 is an apocalyptic number.

It is an amenable number.

22069749 is a deficient number, since it is larger than the sum of its proper divisors (9620203).

22069749 is a wasteful number, since it uses less digits than its factorization.

22069749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565907.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 22069749 is about 4697.8451443188. The cubic root of 22069749 is about 280.4997410402.

The spelling of 22069749 in words is "twenty-two million, sixty-nine thousand, seven hundred forty-nine".