78747379 has 2 divisors, whose sum is σ = 78747380. Its totient is φ = 78747378.

The previous prime is 78747367. The next prime is 78747391. The reversal of 78747379 is 97374787.

It is a balanced prime because it is at equal distance from previous prime (78747367) and next prime (78747391).

It is a cyclic number.

It is not a de Polignac number, because 78747379 - 2⁹ = 78746867 is a prime.

It is a super-2 number, since 2×78747379² = 12402299398739282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78747479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39373689 + 39373690.

It is an arithmetic number, because the mean of its divisors is an integer number (39373690).

Almost surely, 2^78747379 is an apocalyptic number.

78747379 is a deficient number, since it is larger than the sum of its proper divisors (1).

78747379 is an equidigital number, since it uses as much as digits as its factorization.

78747379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2074464, while the sum is 52.

The square root of 78747379 is about 8873.9719968005. The cubic root of 78747379 is about 428.6261887541.

The spelling of 78747379 in words is "seventy-eight million, seven hundred forty-seven thousand, three hundred seventy-nine".