78092849 has 12 divisors (see below), whose sum is σ = 83689956. Its totient is φ = 72617472.

The previous prime is 78092827. The next prime is 78092851. The reversal of 78092849 is 94829087.

It can be written as a sum of positive squares in 2 ways, for example, as 33269824 + 44823025 = 5768^2 + 6695^2 .

It is not a de Polignac number, because 78092849 - 2²⁴ = 61315633 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78092879) 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, 180137 + ... + 180569.

It is an arithmetic number, because the mean of its divisors is an integer number (6974163).

Almost surely, 2^78092849 is an apocalyptic number.

It is an amenable number.

78092849 is a deficient number, since it is larger than the sum of its proper divisors (5597107).

78092849 is a wasteful number, since it uses less digits than its factorization.

78092849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 78092849 is about 8837.0158424663. The cubic root of 78092849 is about 427.4353360238.

The spelling of 78092849 in words is "seventy-eight million, ninety-two thousand, eight hundred forty-nine".