78499347 has 16 divisors (see below), whose sum is σ = 108337152. Its totient is φ = 50506560.

The previous prime is 78499339. The next prime is 78499349. The reversal of 78499347 is 74399487.

It is a happy number.

It is not a de Polignac number, because 78499347 - 2³ = 78499339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78499347.

It is not an unprimeable number, because it can be changed into a prime (78499349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41578 + ... + 43424.

It is an arithmetic number, because the mean of its divisors is an integer number (6771072).

Almost surely, 2^78499347 is an apocalyptic number.

78499347 is a deficient number, since it is larger than the sum of its proper divisors (29837805).

78499347 is a wasteful number, since it uses less digits than its factorization.

78499347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338.

The product of its digits is 1524096, while the sum is 51.

The square root of 78499347 is about 8859.9857223361. The cubic root of 78499347 is about 428.1756983099.

The spelling of 78499347 in words is "seventy-eight million, four hundred ninety-nine thousand, three hundred forty-seven".