44622209 has 2 divisors, whose sum is σ = 44622210. Its totient is φ = 44622208.

The previous prime is 44622191. The next prime is 44622217. The reversal of 44622209 is 90222644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41280625 + 3341584 = 6425^2 + 1828^2 .

It is a cyclic number.

It is not a de Polignac number, because 44622209 - 2⁸ = 44621953 is a prime.

It is a super-2 number, since 2×44622209² = 3982283072079362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44622239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22311104 + 22311105.

It is an arithmetic number, because the mean of its divisors is an integer number (22311105).

Almost surely, 2^44622209 is an apocalyptic number.

It is an amenable number.

44622209 is a deficient number, since it is larger than the sum of its proper divisors (1).

44622209 is an equidigital number, since it uses as much as digits as its factorization.

44622209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 44622209 is about 6679.9857035775. The cubic root of 44622209 is about 354.6911523969.

The spelling of 44622209 in words is "forty-four million, six hundred twenty-two thousand, two hundred nine".