87416477 has 4 divisors (see below), whose sum is σ = 88849596. Its totient is φ = 85983360.

The previous prime is 87416471. The next prime is 87416479. The reversal of 87416477 is 77461478.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77461478 = 2 ⋅38730739.

It can be written as a sum of positive squares in 2 ways, for example, as 28955161 + 58461316 = 5381^2 + 7646^2 .

It is a cyclic number.

It is not a de Polignac number, because 87416477 - 2⁸ = 87416221 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 (87416471) 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 3 ways as a sum of consecutive naturals, for example, 716468 + ... + 716589.

It is an arithmetic number, because the mean of its divisors is an integer number (22212399).

Almost surely, 2^87416477 is an apocalyptic number.

It is an amenable number.

87416477 is a deficient number, since it is larger than the sum of its proper divisors (1433119).

87416477 is a wasteful number, since it uses less digits than its factorization.

87416477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433118.

The product of its digits is 263424, while the sum is 44.

The square root of 87416477 is about 9349.6779088908. The cubic root of 87416477 is about 443.8106979855.

The spelling of 87416477 in words is "eighty-seven million, four hundred sixteen thousand, four hundred seventy-seven".