509149743 has 8 divisors (see below), whose sum is σ = 680717568. Its totient is φ = 338507544.

The previous prime is 509149741. The next prime is 509149757. The reversal of 509149743 is 347941905.

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

It is not a de Polignac number, because 509149743 - 2¹ = 509149741 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 509149695 and 509149704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509149741) 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, 230121 + ... + 232322.

It is an arithmetic number, because the mean of its divisors is an integer number (85089696).

Almost surely, 2^509149743 is an apocalyptic number.

509149743 is a deficient number, since it is larger than the sum of its proper divisors (171567825).

509149743 is a wasteful number, since it uses less digits than its factorization.

509149743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462813.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 509149743 is about 22564.3467222076. The cubic root of 509149743 is about 798.5127278864.

The spelling of 509149743 in words is "five hundred nine million, one hundred forty-nine thousand, seven hundred forty-three".