78412379 has 2 divisors, whose sum is σ = 78412380. Its totient is φ = 78412378.

The previous prime is 78412363. The next prime is 78412391. The reversal of 78412379 is 97321487.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78412379 - 2⁴ = 78412363 is a prime.

It is a super-2 number, since 2×78412379² = 12297002360879282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78412339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39206189 + 39206190.

It is an arithmetic number, because the mean of its divisors is an integer number (39206190).

Almost surely, 2^78412379 is an apocalyptic number.

78412379 is a deficient number, since it is larger than the sum of its proper divisors (1).

78412379 is an equidigital number, since it uses as much as digits as its factorization.

78412379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 78412379 is about 8855.0764536508. The cubic root of 78412379 is about 428.0175171885.

The spelling of 78412379 in words is "seventy-eight million, four hundred twelve thousand, three hundred seventy-nine".