78472699 has 2 divisors, whose sum is σ = 78472700. Its totient is φ = 78472698.

The previous prime is 78472673. The next prime is 78472703. The reversal of 78472699 is 99627487.

It is a strong prime.

It is an emirp because it is prime and its reverse (99627487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78472699 - 2⁷ = 78472571 is a prime.

It is not a weakly prime, because it can be changed into another prime (78472649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39236349 + 39236350.

It is an arithmetic number, because the mean of its divisors is an integer number (39236350).

Almost surely, 2^78472699 is an apocalyptic number.

78472699 is a deficient number, since it is larger than the sum of its proper divisors (1).

78472699 is an equidigital number, since it uses as much as digits as its factorization.

78472699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 52.

The square root of 78472699 is about 8858.4817547930. The cubic root of 78472699 is about 428.1272422068.

The spelling of 78472699 in words is "seventy-eight million, four hundred seventy-two thousand, six hundred ninety-nine".