87417291 has 16 divisors (see below), whose sum is σ = 127653120. Its totient is φ = 52882080.

The previous prime is 87417287. The next prime is 87417293. The reversal of 87417291 is 19271478.

It is not a de Polignac number, because 87417291 - 2² = 87417287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (87417293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16695 + ... + 21296.

It is an arithmetic number, because the mean of its divisors is an integer number (7978320).

Almost surely, 2^87417291 is an apocalyptic number.

87417291 is a deficient number, since it is larger than the sum of its proper divisors (40235829).

87417291 is a wasteful number, since it uses less digits than its factorization.

87417291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38066.

The product of its digits is 28224, while the sum is 39.

The square root of 87417291 is about 9349.7214397008. The cubic root of 87417291 is about 443.8120755320.

The spelling of 87417291 in words is "eighty-seven million, four hundred seventeen thousand, two hundred ninety-one".