123896887 has 2 divisors, whose sum is σ = 123896888. Its totient is φ = 123896886.

The previous prime is 123896809. The next prime is 123896893. The reversal of 123896887 is 788698321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123896887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123896807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61948443 + 61948444.

It is an arithmetic number, because the mean of its divisors is an integer number (61948444).

Almost surely, 2^123896887 is an apocalyptic number.

123896887 is a deficient number, since it is larger than the sum of its proper divisors (1).

123896887 is an equidigital number, since it uses as much as digits as its factorization.

123896887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 52.

The square root of 123896887 is about 11130.8978523747. The cubic root of 123896887 is about 498.5248347216.

The spelling of 123896887 in words is "one hundred twenty-three million, eight hundred ninety-six thousand, eight hundred eighty-seven".