22149977 has 2 divisors, whose sum is σ = 22149978. Its totient is φ = 22149976.

The previous prime is 22149973. The next prime is 22150001. The reversal of 22149977 is 77994122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16679056 + 5470921 = 4084^2 + 2339^2 .

It is a cyclic number.

It is not a de Polignac number, because 22149977 - 2² = 22149973 is a prime.

It is a super-2 number, since 2×22149977² = 981242962201058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22149973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11074988 + 11074989.

It is an arithmetic number, because the mean of its divisors is an integer number (11074989).

Almost surely, 2^22149977 is an apocalyptic number.

It is an amenable number.

22149977 is a deficient number, since it is larger than the sum of its proper divisors (1).

22149977 is an equidigital number, since it uses as much as digits as its factorization.

22149977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 41.

The square root of 22149977 is about 4706.3762068071. The cubic root of 22149977 is about 280.8392211038.

The spelling of 22149977 in words is "twenty-two million, one hundred forty-nine thousand, nine hundred seventy-seven".