826408487 has 2 divisors, whose sum is σ = 826408488. Its totient is φ = 826408486.

The previous prime is 826408459. The next prime is 826408511. The reversal of 826408487 is 784804628.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 826408487 - 2²⁴ = 809631271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (826408417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413204243 + 413204244.

It is an arithmetic number, because the mean of its divisors is an integer number (413204244).

Almost surely, 2^826408487 is an apocalyptic number.

826408487 is a deficient number, since it is larger than the sum of its proper divisors (1).

826408487 is an equidigital number, since it uses as much as digits as its factorization.

826408487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 688128, while the sum is 47.

The square root of 826408487 is about 28747.3213882616. The cubic root of 826408487 is about 938.4221632504.

The spelling of 826408487 in words is "eight hundred twenty-six million, four hundred eight thousand, four hundred eighty-seven".