78909327 has 24 divisors (see below), whose sum is σ = 131214720. Its totient is φ = 44761680.

The previous prime is 78909323. The next prime is 78909331. The reversal of 78909327 is 72390987.

It is an interprime number because it is at equal distance from previous prime (78909323) and next prime (78909331).

It is not a de Polignac number, because 78909327 - 2² = 78909323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78909323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4252 + ... + 13262.

It is an arithmetic number, because the mean of its divisors is an integer number (5467280).

Almost surely, 2^78909327 is an apocalyptic number.

78909327 is a deficient number, since it is larger than the sum of its proper divisors (52305393).

78909327 is a wasteful number, since it uses less digits than its factorization.

78909327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9163 (or 9160 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 78909327 is about 8883.0921981031. The cubic root of 78909327 is about 428.9198180953.

The spelling of 78909327 in words is "seventy-eight million, nine hundred nine thousand, three hundred twenty-seven".