898408439 has 2 divisors, whose sum is σ = 898408440. Its totient is φ = 898408438.

The previous prime is 898408391. The next prime is 898408457. The reversal of 898408439 is 934804898.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 898408439 - 2¹² = 898404343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898408499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449204219 + 449204220.

It is an arithmetic number, because the mean of its divisors is an integer number (449204220).

Almost surely, 2^898408439 is an apocalyptic number.

898408439 is a deficient number, since it is larger than the sum of its proper divisors (1).

898408439 is an equidigital number, since it uses as much as digits as its factorization.

898408439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 53.

The square root of 898408439 is about 29973.4622457934. The cubic root of 898408439 is about 964.9199246289.

The spelling of 898408439 in words is "eight hundred ninety-eight million, four hundred eight thousand, four hundred thirty-nine".