78393069 has 64 divisors (see below), whose sum is σ = 132192000. Its totient is φ = 45619200.

The previous prime is 78393023. The next prime is 78393071. The reversal of 78393069 is 96039387.

It is a happy number.

It is not a de Polignac number, because 78393069 - 2⁸ = 78392813 is a prime.

It is a super-2 number, since 2×78393069² = 12290946534477522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78393019) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 776119 + ... + 776219.

It is an arithmetic number, because the mean of its divisors is an integer number (2065500).

Almost surely, 2^78393069 is an apocalyptic number.

It is an amenable number.

78393069 is a deficient number, since it is larger than the sum of its proper divisors (53798931).

78393069 is a wasteful number, since it uses less digits than its factorization.

78393069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 78393069 is about 8853.9860514912. The cubic root of 78393069 is about 427.9823794679.

The spelling of 78393069 in words is "seventy-eight million, three hundred ninety-three thousand, sixty-nine".