103493987 has 4 divisors (see below), whose sum is σ = 103526040. Its totient is φ = 103461936.

The previous prime is 103493983. The next prime is 103493989. The reversal of 103493987 is 789394301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 103493987 - 2² = 103493983 is a prime.

It is a super-2 number, since 2×103493987² = 21422010690312338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103493983) 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 in 3 ways as a sum of consecutive naturals, for example, 10562 + ... + 17847.

It is an arithmetic number, because the mean of its divisors is an integer number (25881510).

Almost surely, 2^103493987 is an apocalyptic number.

103493987 is a deficient number, since it is larger than the sum of its proper divisors (32053).

103493987 is an equidigital number, since it uses as much as digits as its factorization.

103493987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32052.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 103493987 is about 10173.1994475681. The cubic root of 103493987 is about 469.5030011191.

The spelling of 103493987 in words is "one hundred three million, four hundred ninety-three thousand, nine hundred eighty-seven".