78462899 has 2 divisors, whose sum is σ = 78462900. Its totient is φ = 78462898.

The previous prime is 78462877. The next prime is 78462907. The reversal of 78462899 is 99826487.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78462899 - 2¹² = 78458803 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78462899.

It is not a weakly prime, because it can be changed into another prime (78462199) 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, 39231449 + 39231450.

It is an arithmetic number, because the mean of its divisors is an integer number (39231450).

Almost surely, 2^78462899 is an apocalyptic number.

78462899 is a deficient number, since it is larger than the sum of its proper divisors (1).

78462899 is an equidigital number, since it uses as much as digits as its factorization.

78462899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The square root of 78462899 is about 8857.9285953320. The cubic root of 78462899 is about 428.1094193559.

The spelling of 78462899 in words is "seventy-eight million, four hundred sixty-two thousand, eight hundred ninety-nine".