22039477 has 2 divisors, whose sum is σ = 22039478. Its totient is φ = 22039476.

The previous prime is 22039471. The next prime is 22039489. The reversal of 22039477 is 77493022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13242321 + 8797156 = 3639^2 + 2966^2 .

It is a cyclic number.

It is not a de Polignac number, because 22039477 - 2¹¹ = 22037429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22039471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11019738 + 11019739.

It is an arithmetic number, because the mean of its divisors is an integer number (11019739).

Almost surely, 2^22039477 is an apocalyptic number.

It is an amenable number.

22039477 is a deficient number, since it is larger than the sum of its proper divisors (1).

22039477 is an equidigital number, since it uses as much as digits as its factorization.

22039477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 22039477 is about 4694.6221360190. The cubic root of 22039477 is about 280.3714330792.

The spelling of 22039477 in words is "twenty-two million, thirty-nine thousand, four hundred seventy-seven".