998528407 has 2 divisors, whose sum is σ = 998528408. Its totient is φ = 998528406.

The previous prime is 998528389. The next prime is 998528411. The reversal of 998528407 is 704825899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998528407 - 2¹¹ = 998526359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998528477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499264203 + 499264204.

It is an arithmetic number, because the mean of its divisors is an integer number (499264204).

Almost surely, 2^998528407 is an apocalyptic number.

998528407 is a deficient number, since it is larger than the sum of its proper divisors (1).

998528407 is an equidigital number, since it uses as much as digits as its factorization.

998528407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 998528407 is about 31599.5001068055. The cubic root of 998528407 is about 999.5092281824.

The spelling of 998528407 in words is "nine hundred ninety-eight million, five hundred twenty-eight thousand, four hundred seven".