398705033 has 8 divisors (see below), whose sum is σ = 408713256. Its totient is φ = 388710400.

The previous prime is 398705011. The next prime is 398705053. The reversal of 398705033 is 330507893.

It can be written as a sum of positive squares in 4 ways, for example, as 44249104 + 354455929 = 6652^2 + 18827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398705033 - 2¹⁴ = 398688649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (398705003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82985 + ... + 87657.

It is an arithmetic number, because the mean of its divisors is an integer number (51089157).

Almost surely, 2^398705033 is an apocalyptic number.

It is an amenable number.

398705033 is a deficient number, since it is larger than the sum of its proper divisors (10008223).

398705033 is a wasteful number, since it uses less digits than its factorization.

398705033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6795.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 398705033 is about 19967.5995803201. The cubic root of 398705033 is about 736.0103236038.

The spelling of 398705033 in words is "three hundred ninety-eight million, seven hundred five thousand, thirty-three".