78969369 has 32 divisors (see below), whose sum is σ = 116121600. Its totient is φ = 47520000.

The previous prime is 78969367. The next prime is 78969389. The reversal of 78969369 is 96396987.

It is not a de Polignac number, because 78969369 - 2¹ = 78969367 is a prime.

It is a super-3 number, since 3×78969369³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (78969361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314494 + ... + 314744.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^78969369 is an apocalyptic number.

It is an amenable number.

78969369 is a deficient number, since it is larger than the sum of its proper divisors (37152231).

78969369 is a wasteful number, since it uses less digits than its factorization.

78969369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its digits is 4408992, while the sum is 57.

The square root of 78969369 is about 8886.4711218796. The cubic root of 78969369 is about 429.0285786842.

The spelling of 78969369 in words is "seventy-eight million, nine hundred sixty-nine thousand, three hundred sixty-nine".