76473009 has 12 divisors (see below), whose sum is σ = 110708676. Its totient is φ = 50867712.

The previous prime is 76472993. The next prime is 76473013. The reversal of 76473009 is 90037467.

76473009 is a `hidden beast` number, since 7 + 647 + 3 + 0 + 0 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56250000 + 20223009 = 7500^2 + 4497^2 .

It is not a de Polignac number, because 76473009 - 2⁴ = 76472993 is a prime.

It is a super-2 number, since 2×76473009² = 11696242211028162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76473409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5184 + ... + 13409.

It is an arithmetic number, because the mean of its divisors is an integer number (9225723).

Almost surely, 2^76473009 is an apocalyptic number.

It is an amenable number.

76473009 is a deficient number, since it is larger than the sum of its proper divisors (34235667).

76473009 is a wasteful number, since it uses less digits than its factorization.

76473009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19056 (or 19053 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 76473009 is about 8744.8847333741. The cubic root of 76473009 is about 424.4593059502.

The spelling of 76473009 in words is "seventy-six million, four hundred seventy-three thousand, nine".