78969349 has 16 divisors (see below), whose sum is σ = 83966400. Its totient is φ = 74156544.

The previous prime is 78969347. The next prime is 78969361. The reversal of 78969349 is 94396987.

It is a cyclic number.

It is not a de Polignac number, because 78969349 - 2¹ = 78969347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78969349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78969343) 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 15 ways as a sum of consecutive naturals, for example, 188262 + ... + 188680.

It is an arithmetic number, because the mean of its divisors is an integer number (5247900).

Almost surely, 2^78969349 is an apocalyptic number.

It is an amenable number.

78969349 is a deficient number, since it is larger than the sum of its proper divisors (4997051).

78969349 is a wasteful number, since it uses less digits than its factorization.

78969349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612.

The product of its digits is 2939328, while the sum is 55.

The square root of 78969349 is about 8886.4699965734. The cubic root of 78969349 is about 429.0285424652.

The spelling of 78969349 in words is "seventy-eight million, nine hundred sixty-nine thousand, three hundred forty-nine".