501954444 has 36 divisors (see below), whose sum is σ = 1343467944. Its totient is φ = 157475712.

The previous prime is 501954379. The next prime is 501954527. The reversal of 501954444 is 444459105.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 501954399 and 501954408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 409482 + ... + 410705.

It is an arithmetic number, because the mean of its divisors is an integer number (37318554).

Almost surely, 2^501954444 is an apocalyptic number.

It is an amenable number.

501954444 is an abundant number, since it is smaller than the sum of its proper divisors (841513500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501954444 is a wasteful number, since it uses less digits than its factorization.

501954444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820214 (or 820209 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 501954444 is about 22404.3398474492. The cubic root of 501954444 is about 794.7333435819.

The spelling of 501954444 in words is "five hundred one million, nine hundred fifty-four thousand, four hundred forty-four".