78411407 has 2 divisors, whose sum is σ = 78411408. Its totient is φ = 78411406.

The previous prime is 78411401. The next prime is 78411409. The reversal of 78411407 is 70411487.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78411407 - 2¹⁰ = 78410383 is a prime.

It is a super-2 number, since 2×78411407² = 12296697495439298, which contains 22 as substring.

Together with 78411409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78411401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39205703 + 39205704.

It is an arithmetic number, because the mean of its divisors is an integer number (39205704).

Almost surely, 2^78411407 is an apocalyptic number.

78411407 is a deficient number, since it is larger than the sum of its proper divisors (1).

78411407 is an equidigital number, since it uses as much as digits as its factorization.

78411407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 78411407 is about 8855.0215697083. The cubic root of 78411407 is about 428.0157486126.

The spelling of 78411407 in words is "seventy-eight million, four hundred eleven thousand, four hundred seven".