78465199 has 2 divisors, whose sum is σ = 78465200. Its totient is φ = 78465198.

The previous prime is 78465173. The next prime is 78465223. The reversal of 78465199 is 99156487.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78465199 - 2⁷ = 78465071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78462199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39232599 + 39232600.

It is an arithmetic number, because the mean of its divisors is an integer number (39232600).

Almost surely, 2^78465199 is an apocalyptic number.

78465199 is a deficient number, since it is larger than the sum of its proper divisors (1).

78465199 is an equidigital number, since it uses as much as digits as its factorization.

78465199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 78465199 is about 8858.0584215730. The cubic root of 78465199 is about 428.1136024032.

The spelling of 78465199 in words is "seventy-eight million, four hundred sixty-five thousand, one hundred ninety-nine".