90828239 has 2 divisors, whose sum is σ = 90828240. Its totient is φ = 90828238.

The previous prime is 90828211. The next prime is 90828253. The reversal of 90828239 is 93282809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90828239 - 2⁸ = 90827983 is a prime.

It is a super-2 number, since 2×90828239² = 16499537999682242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90828196 and 90828205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90828139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45414119 + 45414120.

It is an arithmetic number, because the mean of its divisors is an integer number (45414120).

Almost surely, 2^90828239 is an apocalyptic number.

90828239 is a deficient number, since it is larger than the sum of its proper divisors (1).

90828239 is an equidigital number, since it uses as much as digits as its factorization.

90828239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 90828239 is about 9530.3850394410. The cubic root of 90828239 is about 449.5109732812.

The spelling of 90828239 in words is "ninety million, eight hundred twenty-eight thousand, two hundred thirty-nine".