87417409 has 8 divisors (see below), whose sum is σ = 90969120. Its totient is φ = 83934816.

The previous prime is 87417403. The next prime is 87417413. The reversal of 87417409 is 90471478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87417409 - 2⁵ = 87417377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87417403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14692 + ... + 19765.

It is an arithmetic number, because the mean of its divisors is an integer number (11371140).

Almost surely, 2^87417409 is an apocalyptic number.

It is an amenable number.

87417409 is a deficient number, since it is larger than the sum of its proper divisors (3551711).

87417409 is a wasteful number, since it uses less digits than its factorization.

87417409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34559.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 87417409 is about 9349.7277500471. The cubic root of 87417409 is about 443.8122752248.

The spelling of 87417409 in words is "eighty-seven million, four hundred seventeen thousand, four hundred nine".