503406441 has 16 divisors (see below), whose sum is σ = 746132800. Its totient is φ = 335448864.

The previous prime is 503406439. The next prime is 503406457. The reversal of 503406441 is 144604305.

It is not a de Polignac number, because 503406441 - 2¹ = 503406439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503406481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113850 + ... + 118188.

It is an arithmetic number, because the mean of its divisors is an integer number (46633300).

Almost surely, 2^503406441 is an apocalyptic number.

It is an amenable number.

503406441 is a deficient number, since it is larger than the sum of its proper divisors (242726359).

503406441 is a wasteful number, since it uses less digits than its factorization.

503406441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8645 (or 8639 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 503406441 is about 22436.7208165543. The cubic root of 503406441 is about 795.4989107608.

The spelling of 503406441 in words is "five hundred three million, four hundred six thousand, four hundred forty-one".