78938737 has 8 divisors (see below), whose sum is σ = 82802304. Its totient is φ = 75111168.

The previous prime is 78938719. The next prime is 78938767. The reversal of 78938737 is 73783987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78938737 - 2¹⁵ = 78905969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78938767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4453 + ... + 13330.

It is an arithmetic number, because the mean of its divisors is an integer number (10350288).

Almost surely, 2^78938737 is an apocalyptic number.

It is an amenable number.

78938737 is a deficient number, since it is larger than the sum of its proper divisors (3863567).

78938737 is a wasteful number, since it uses less digits than its factorization.

78938737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17999.

The product of its digits is 1778112, while the sum is 52.

The square root of 78938737 is about 8884.7474359151. The cubic root of 78938737 is about 428.9730985100.

The spelling of 78938737 in words is "seventy-eight million, nine hundred thirty-eight thousand, seven hundred thirty-seven".