898517749 has 2 divisors, whose sum is σ = 898517750. Its totient is φ = 898517748.

The previous prime is 898517743. The next prime is 898517801. The reversal of 898517749 is 947715898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515063025 + 383454724 = 22695^2 + 19582^2 .

It is a cyclic number.

It is not a de Polignac number, because 898517749 - 2⁵ = 898517717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 898517693 and 898517702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898517743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449258874 + 449258875.

It is an arithmetic number, because the mean of its divisors is an integer number (449258875).

Almost surely, 2^898517749 is an apocalyptic number.

It is an amenable number.

898517749 is a deficient number, since it is larger than the sum of its proper divisors (1).

898517749 is an equidigital number, since it uses as much as digits as its factorization.

898517749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 58.

The square root of 898517749 is about 29975.2856366708. The cubic root of 898517749 is about 964.9590572086.

The spelling of 898517749 in words is "eight hundred ninety-eight million, five hundred seventeen thousand, seven hundred forty-nine".