78960397 has 2 divisors, whose sum is σ = 78960398. Its totient is φ = 78960396.

The previous prime is 78960367. The next prime is 78960451. The reversal of 78960397 is 79306987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78747876 + 212521 = 8874^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 78960397 - 2⁷ = 78960269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78960397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78960337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39480198 + 39480199.

It is an arithmetic number, because the mean of its divisors is an integer number (39480199).

Almost surely, 2^78960397 is an apocalyptic number.

It is an amenable number.

78960397 is a deficient number, since it is larger than the sum of its proper divisors (1).

78960397 is an equidigital number, since it uses as much as digits as its factorization.

78960397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 78960397 is about 8885.9662952320. The cubic root of 78960397 is about 429.0123302314.

The spelling of 78960397 in words is "seventy-eight million, nine hundred sixty thousand, three hundred ninety-seven".