898966801 has 4 divisors (see below), whose sum is σ = 899028004. Its totient is φ = 898905600.

The previous prime is 898966781. The next prime is 898966807. The reversal of 898966801 is 108669898.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 108669898 = 2 ⋅54334949.

It can be written as a sum of positive squares in 2 ways, for example, as 2563201 + 896403600 = 1601^2 + 29940^2 .

It is a 3-Lehmer number, since φ(898966801) divides (898966801-1)³.

It is a cyclic number.

It is not a de Polignac number, because 898966801 - 2⁵ = 898966769 is a prime.

It is a deceptive number, since it divides R_898966800.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (898966807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6121 + ... + 42841.

It is an arithmetic number, because the mean of its divisors is an integer number (224757001).

It is a Poulet number, since it divides 2^898966800-1.

Almost surely, 2^898966801 is an apocalyptic number.

898966801 is the 24481-st pentagonal number.

It is an amenable number.

898966801 is a deficient number, since it is larger than the sum of its proper divisors (61203).

898966801 is a wasteful number, since it uses less digits than its factorization.

898966801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61202.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The square root of 898966801 is about 29982.7750716974. The cubic root of 898966801 is about 965.1197828885.

The spelling of 898966801 in words is "eight hundred ninety-eight million, nine hundred sixty-six thousand, eight hundred one".