509141405 has 6 divisors (see below), whose sum is σ = 611030238. Its totient is φ = 407272760.

The previous prime is 509141401. The next prime is 509141407. The reversal of 509141405 is 504141905.

It can be written as a sum of positive squares in only one way, i.e., 407313124 + 101828281 = 20182^2 + 10091^2 .

It is not a de Polignac number, because 509141405 - 2² = 509141401 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 (509141401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45410 + ... + 55500.

It is an arithmetic number, because the mean of its divisors is an integer number (101838373).

Almost surely, 2^509141405 is an apocalyptic number.

It is an amenable number.

509141405 is a deficient number, since it is larger than the sum of its proper divisors (101888833).

509141405 is an frugal number, since it uses more digits than its factorization.

509141405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20187 (or 10096 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 509141405 is about 22564.1619609504. The cubic root of 509141405 is about 798.5083689621.

The spelling of 509141405 in words is "five hundred nine million, one hundred forty-one thousand, four hundred five".