76130209 has 4 divisors (see below), whose sum is σ = 76641300. Its totient is φ = 75619120.

The previous prime is 76130183. The next prime is 76130221. The reversal of 76130209 is 90203167.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90203167 = 241 ⋅374287.

It can be written as a sum of positive squares in 2 ways, for example, as 7290000 + 68840209 = 2700^2 + 8297^2 .

It is a cyclic number.

It is not a de Polignac number, because 76130209 - 2¹³ = 76122017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76130609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255322 + ... + 255619.

It is an arithmetic number, because the mean of its divisors is an integer number (19160325).

Almost surely, 2^76130209 is an apocalyptic number.

It is an amenable number.

76130209 is a deficient number, since it is larger than the sum of its proper divisors (511091).

76130209 is a wasteful number, since it uses less digits than its factorization.

76130209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511090.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 76130209 is about 8725.2626894553. The cubic root of 76130209 is about 423.8241249479.

The spelling of 76130209 in words is "seventy-six million, one hundred thirty thousand, two hundred nine".