87403887 has 32 divisors (see below), whose sum is σ = 136604160. Its totient is φ = 55123200.

The previous prime is 87403873. The next prime is 87403889. The reversal of 87403887 is 78830478.

It is not a de Polignac number, because 87403887 - 2⁴ = 87403871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87403889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59512 + ... + 60962.

It is an arithmetic number, because the mean of its divisors is an integer number (4268880).

Almost surely, 2^87403887 is an apocalyptic number.

87403887 is a deficient number, since it is larger than the sum of its proper divisors (49200273).

87403887 is a wasteful number, since it uses less digits than its factorization.

87403887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 87403887 is about 9349.0045994213. The cubic root of 87403887 is about 443.7893906182.

The spelling of 87403887 in words is "eighty-seven million, four hundred three thousand, eight hundred eighty-seven".