105928987 has 2 divisors, whose sum is σ = 105928988. Its totient is φ = 105928986.

The previous prime is 105928969. The next prime is 105928997. The reversal of 105928987 is 789829501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105928987 - 2⁷ = 105928859 is a prime.

It is a super-2 number, since 2×105928987² = 22441900573692338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105928987.

It is not a weakly prime, because it can be changed into another prime (105928997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52964493 + 52964494.

It is an arithmetic number, because the mean of its divisors is an integer number (52964494).

Almost surely, 2^105928987 is an apocalyptic number.

105928987 is a deficient number, since it is larger than the sum of its proper divisors (1).

105928987 is an equidigital number, since it uses as much as digits as its factorization.

105928987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 105928987 is about 10292.1808670466. The cubic root of 105928987 is about 473.1566406667.

The spelling of 105928987 in words is "one hundred five million, nine hundred twenty-eight thousand, nine hundred eighty-seven".