120863879 has 2 divisors, whose sum is σ = 120863880. Its totient is φ = 120863878.

The previous prime is 120863861. The next prime is 120863881. The reversal of 120863879 is 978368021.

It is a strong prime.

It is an emirp because it is prime and its reverse (978368021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120863879 - 2⁸ = 120863623 is a prime.

Together with 120863881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120863849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60431939 + 60431940.

It is an arithmetic number, because the mean of its divisors is an integer number (60431940).

Almost surely, 2^120863879 is an apocalyptic number.

120863879 is a deficient number, since it is larger than the sum of its proper divisors (1).

120863879 is an equidigital number, since it uses as much as digits as its factorization.

120863879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 120863879 is about 10993.8109407066. The cubic root of 120863879 is about 494.4232019022.

The spelling of 120863879 in words is "one hundred twenty million, eight hundred sixty-three thousand, eight hundred seventy-nine".