87474447447 has 8 divisors (see below), whose sum is σ = 117236911344. Its totient is φ = 58014140928.

The previous prime is 87474447421. The next prime is 87474447499. The reversal of 87474447447 is 74474447478.

It is a happy number.

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

It is not a de Polignac number, because 87474447447 - 2³⁰ = 86400705623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87474447407) 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, 75538668 + ... + 75539825.

It is an arithmetic number, because the mean of its divisors is an integer number (14654613918).

Almost surely, 2^87474447447 is an apocalyptic number.

87474447447 is a deficient number, since it is larger than the sum of its proper divisors (29762463897).

87474447447 is a wasteful number, since it uses less digits than its factorization.

87474447447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151078689.

The product of its digits is 78675968, while the sum is 60.

The spelling of 87474447447 in words is "eighty-seven billion, four hundred seventy-four million, four hundred forty-seven thousand, four hundred forty-seven".