398848045 has 4 divisors (see below), whose sum is σ = 478617660. Its totient is φ = 319078432.

The previous prime is 398848039. The next prime is 398848069. The reversal of 398848045 is 540848893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540848893 = 13 ⋅41603761.

It can be written as a sum of positive squares in 2 ways, for example, as 265722601 + 133125444 = 16301^2 + 11538^2 .

It is a cyclic number.

It is not a de Polignac number, because 398848045 - 2⁵ = 398848013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398848045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39884800 + ... + 39884809.

It is an arithmetic number, because the mean of its divisors is an integer number (119654415).

Almost surely, 2^398848045 is an apocalyptic number.

It is an amenable number.

398848045 is a deficient number, since it is larger than the sum of its proper divisors (79769615).

398848045 is an equidigital number, since it uses as much as digits as its factorization.

398848045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79769614.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The square root of 398848045 is about 19971.1803607098. The cubic root of 398848045 is about 736.0983132345.

The spelling of 398848045 in words is "three hundred ninety-eight million, eight hundred forty-eight thousand, forty-five".