898891493 has 2 divisors, whose sum is σ = 898891494. Its totient is φ = 898891492.

The previous prime is 898891459. The next prime is 898891523. The reversal of 898891493 is 394198898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 733434724 + 165456769 = 27082^2 + 12863^2 .

It is a cyclic number.

It is not a de Polignac number, because 898891493 - 2⁶ = 898891429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898891423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449445746 + 449445747.

It is an arithmetic number, because the mean of its divisors is an integer number (449445747).

Almost surely, 2^898891493 is an apocalyptic number.

It is an amenable number.

898891493 is a deficient number, since it is larger than the sum of its proper divisors (1).

898891493 is an equidigital number, since it uses as much as digits as its factorization.

898891493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 59.

The square root of 898891493 is about 29981.5191909950. The cubic root of 898891493 is about 965.0928322194.

The spelling of 898891493 in words is "eight hundred ninety-eight million, eight hundred ninety-one thousand, four hundred ninety-three".