541994993 has 4 divisors (see below), whose sum is σ = 545240640.
Its totient is φ = 538749348.
The previous prime is 541994953. The next prime is 541995017. The reversal of 541994993 is 399499145.
It is a happy number.
541994993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a de Polignac number, because none of the positive numbers 2k-541994993 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (541994933) 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, 1622573 + ... + 1622906.
It is an arithmetic number, because the mean of its divisors is an integer number (136310160).
Almost surely, 2541994993 is an apocalyptic number.
It is an amenable number.
541994993 is a deficient number, since it is larger than the sum of its proper divisors (3245647).
541994993 is a wasteful number, since it uses less digits than its factorization.
541994993 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3245646.
The product of its digits is 1574640, while the sum is 53.
The square root of 541994993 is about 23280.7859188645.
The cubic root of 541994993 is about 815.3268755430.
The spelling of 541994993 in words is "five hundred forty-one million, nine hundred ninety-four thousand, nine hundred ninety-three".