78914911 has 2 divisors, whose sum is σ = 78914912. Its totient is φ = 78914910.

The previous prime is 78914903. The next prime is 78914921. The reversal of 78914911 is 11941987.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78914911 - 2³ = 78914903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78914921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39457455 + 39457456.

It is an arithmetic number, because the mean of its divisors is an integer number (39457456).

Almost surely, 2^78914911 is an apocalyptic number.

78914911 is a deficient number, since it is larger than the sum of its proper divisors (1).

78914911 is an equidigital number, since it uses as much as digits as its factorization.

78914911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 40.

The square root of 78914911 is about 8883.4064975098. The cubic root of 78914911 is about 428.9299353267.

The spelling of 78914911 in words is "seventy-eight million, nine hundred fourteen thousand, nine hundred eleven".