501489941 has 4 divisors (see below), whose sum is σ = 503300652. Its totient is φ = 499679232.

The previous prime is 501489931. The next prime is 501489973. The reversal of 501489941 is 149984105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149984105 = 5 ⋅29996821.

It can be written as a sum of positive squares in 2 ways, for example, as 112572100 + 388917841 = 10610^2 + 19721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501489941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501489931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904940 + ... + 905493.

It is an arithmetic number, because the mean of its divisors is an integer number (125825163).

Almost surely, 2^501489941 is an apocalyptic number.

It is an amenable number.

501489941 is a deficient number, since it is larger than the sum of its proper divisors (1810711).

501489941 is a wasteful number, since it uses less digits than its factorization.

501489941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810710.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 501489941 is about 22393.9710859865. The cubic root of 501489941 is about 794.4881221571.

The spelling of 501489941 in words is "five hundred one million, four hundred eighty-nine thousand, nine hundred forty-one".