78494759 has 8 divisors (see below), whose sum is σ = 92602368. Its totient is φ = 65110680.

The previous prime is 78494753. The next prime is 78494789. The reversal of 78494759 is 95749487.

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 78494759 - 2¹² = 78490663 is a prime.

It is a super-2 number, since 2×78494759² = 12322854380936162, which contains 22 as substring.

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 78494759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78494753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180647 + ... + 181080.

It is an arithmetic number, because the mean of its divisors is an integer number (11575296).

Almost surely, 2^78494759 is an apocalyptic number.

78494759 is a deficient number, since it is larger than the sum of its proper divisors (14107609).

78494759 is a wasteful number, since it uses less digits than its factorization.

78494759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361765.

The product of its digits is 2540160, while the sum is 53.

The square root of 78494759 is about 8859.7268016570. The cubic root of 78494759 is about 428.1673563791.

The spelling of 78494759 in words is "seventy-eight million, four hundred ninety-four thousand, seven hundred fifty-nine".