398281849 has 9 divisors (see below), whose sum is σ = 463470021. Its totient is φ = 341264700.

The previous prime is 398281847. The next prime is 398281883. The reversal of 398281849 is 948182893.

The square root of 398281849 is 19957.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 398281849 - 2¹ = 398281847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398281796 and 398281805.

It is not an unprimeable number, because it can be changed into a prime (398281847) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 138274 + ... + 141124.

It is an arithmetic number, because the mean of its divisors is an integer number (51496669).

Almost surely, 2^398281849 is an apocalyptic number.

398281849 is the 19957-th square number.

398281849 is the 9979-th centered octagonal number.

It is an amenable number.

398281849 is a deficient number, since it is larger than the sum of its proper divisors (65188172).

398281849 is an frugal number, since it uses more digits than its factorization.

398281849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5716 (or 2858 counting only the distinct ones).

The product of its digits is 995328, while the sum is 52.

The cubic root of 398281849 is about 735.7498319045.

The spelling of 398281849 in words is "three hundred ninety-eight million, two hundred eighty-one thousand, eight hundred forty-nine".