398545033 has 4 divisors (see below), whose sum is σ = 404004628. Its totient is φ = 393085440.

The previous prime is 398545031. The next prime is 398545067. The reversal of 398545033 is 330545893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 330545893 = 487 ⋅678739.

It can be written as a sum of positive squares in 2 ways, for example, as 279123849 + 119421184 = 16707^2 + 10928^2 .

It is a cyclic number.

It is not a de Polignac number, because 398545033 - 2¹ = 398545031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398545031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2729688 + ... + 2729833.

It is an arithmetic number, because the mean of its divisors is an integer number (101001157).

Almost surely, 2^398545033 is an apocalyptic number.

It is an amenable number.

398545033 is a deficient number, since it is larger than the sum of its proper divisors (5459595).

398545033 is an equidigital number, since it uses as much as digits as its factorization.

398545033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459594.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 398545033 is about 19963.5926876903. The cubic root of 398545033 is about 735.9118569864.

The spelling of 398545033 in words is "three hundred ninety-eight million, five hundred forty-five thousand, thirty-three".