509883421 has 8 divisors (see below), whose sum is σ = 536437944. Its totient is φ = 484001280.

The previous prime is 509883383. The next prime is 509883427. The reversal of 509883421 is 124388905.

It can be written as a sum of positive squares in 4 ways, for example, as 13039321 + 496844100 = 3611^2 + 22290^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 509883421 - 2⁹ = 509882909 is a prime.

It is a super-2 number, since 2×509883421² = 519962206021326482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509883427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166540 + ... + 169573.

It is an arithmetic number, because the mean of its divisors is an integer number (67054743).

Almost surely, 2^509883421 is an apocalyptic number.

It is an amenable number.

509883421 is a deficient number, since it is larger than the sum of its proper divisors (26554523).

509883421 is a wasteful number, since it uses less digits than its factorization.

509883421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336191.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 509883421 is about 22580.5983313109. The cubic root of 509883421 is about 798.8960925402.

The spelling of 509883421 in words is "five hundred nine million, eight hundred eighty-three thousand, four hundred twenty-one".