78899063 has 2 divisors, whose sum is σ = 78899064. Its totient is φ = 78899062.

The previous prime is 78899021. The next prime is 78899069. The reversal of 78899063 is 36099887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78899063 - 2¹² = 78894967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78899069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39449531 + 39449532.

It is an arithmetic number, because the mean of its divisors is an integer number (39449532).

Almost surely, 2^78899063 is an apocalyptic number.

78899063 is a deficient number, since it is larger than the sum of its proper divisors (1).

78899063 is an equidigital number, since it uses as much as digits as its factorization.

78899063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 78899063 is about 8882.5144525635. The cubic root of 78899063 is about 428.9012202773.

The spelling of 78899063 in words is "seventy-eight million, eight hundred ninety-nine thousand, sixty-three".