9020639 has 2 divisors, whose sum is σ = 9020640. Its totient is φ = 9020638.

The previous prime is 9020633. The next prime is 9020657. The reversal of 9020639 is 9360209.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9020639 - 2¹² = 9016543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9020633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4510319 + 4510320.

It is an arithmetic number, because the mean of its divisors is an integer number (4510320).

Almost surely, 2^9020639 is an apocalyptic number.

9020639 is a deficient number, since it is larger than the sum of its proper divisors (1).

9020639 is an equidigital number, since it uses as much as digits as its factorization.

9020639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 9020639 is about 3003.4378635157. The cubic root of 9020639 is about 208.1672640649.

The spelling of 9020639 in words is "nine million, twenty thousand, six hundred thirty-nine".