398734541 has 8 divisors (see below), whose sum is σ = 427974264. Its totient is φ = 370137600.

The previous prime is 398734477. The next prime is 398734547. The reversal of 398734541 is 145437893.

It can be written as a sum of positive squares in 4 ways, for example, as 128822500 + 269912041 = 11350^2 + 16429^2 .

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

It is not a de Polignac number, because 398734541 - 2⁶ = 398734477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398734492 and 398734501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398734547) 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, 159410 + ... + 161891.

It is an arithmetic number, because the mean of its divisors is an integer number (53496783).

Almost surely, 2^398734541 is an apocalyptic number.

It is an amenable number.

398734541 is a deficient number, since it is larger than the sum of its proper divisors (29239723).

398734541 is a wasteful number, since it uses less digits than its factorization.

398734541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321391.

The product of its digits is 362880, while the sum is 44.

The square root of 398734541 is about 19968.3384636779. The cubic root of 398734541 is about 736.0284804324.

The spelling of 398734541 in words is "three hundred ninety-eight million, seven hundred thirty-four thousand, five hundred forty-one".