398126543 has 4 divisors (see below), whose sum is σ = 398579328. Its totient is φ = 397673760.

The previous prime is 398126539. The next prime is 398126567. The reversal of 398126543 is 345621893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 398126543 - 2² = 398126539 is a prime.

It is a super-2 number, since 2×398126543² = 317009488482261698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398126543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398126593) 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, 225071 + ... + 226832.

It is an arithmetic number, because the mean of its divisors is an integer number (99644832).

Almost surely, 2^398126543 is an apocalyptic number.

398126543 is a deficient number, since it is larger than the sum of its proper divisors (452785).

398126543 is an equidigital number, since it uses as much as digits as its factorization.

398126543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452784.

The product of its digits is 155520, while the sum is 41.

The square root of 398126543 is about 19953.1086049267. The cubic root of 398126543 is about 735.6541867232.

The spelling of 398126543 in words is "three hundred ninety-eight million, one hundred twenty-six thousand, five hundred forty-three".