401934543 has 4 divisors (see below), whose sum is σ = 535912728. Its totient is φ = 267956360.

The previous prime is 401934539. The next prime is 401934619. The reversal of 401934543 is 345439104.

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 401934543 - 2² = 401934539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401934523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66989088 + ... + 66989093.

It is an arithmetic number, because the mean of its divisors is an integer number (133978182).

Almost surely, 2^401934543 is an apocalyptic number.

401934543 is a deficient number, since it is larger than the sum of its proper divisors (133978185).

401934543 is a wasteful number, since it uses less digits than its factorization.

401934543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133978184.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 401934543 is about 20048.3052400945. The cubic root of 401934543 is about 737.9922095079.

The spelling of 401934543 in words is "four hundred one million, nine hundred thirty-four thousand, five hundred forty-three".