87039903 has 4 divisors (see below), whose sum is σ = 116053208. Its totient is φ = 58026600.

The previous prime is 87039853. The next prime is 87039913. The reversal of 87039903 is 30993078.

It is a happy number.

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

It is not a de Polignac number, because 87039903 - 2⁸ = 87039647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87039913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14506648 + ... + 14506653.

It is an arithmetic number, because the mean of its divisors is an integer number (29013302).

Almost surely, 2^87039903 is an apocalyptic number.

87039903 is a deficient number, since it is larger than the sum of its proper divisors (29013305).

87039903 is a wasteful number, since it uses less digits than its factorization.

87039903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29013304.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 87039903 is about 9329.5178332002. The cubic root of 87039903 is about 443.1724959120.

The spelling of 87039903 in words is "eighty-seven million, thirty-nine thousand, nine hundred three".