509770423 has 6 divisors (see below), whose sum is σ = 523921776. Its totient is φ = 495991512.

The previous prime is 509770421. The next prime is 509770427. The reversal of 509770423 is 324077905.

It is not a de Polignac number, because 509770423 - 2¹ = 509770421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509770421) 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, 184815 + ... + 187552.

It is an arithmetic number, because the mean of its divisors is an integer number (87320296).

Almost surely, 2^509770423 is an apocalyptic number.

509770423 is the 12069-th centered heptagonal number.

509770423 is a deficient number, since it is larger than the sum of its proper divisors (14151353).

509770423 is an equidigital number, since it uses as much as digits as its factorization.

509770423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372441 (or 372404 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 509770423 is about 22578.0960889088. The cubic root of 509770423 is about 798.8370722973.

The spelling of 509770423 in words is "five hundred nine million, seven hundred seventy thousand, four hundred twenty-three".