87447244 has 12 divisors (see below), whose sum is σ = 155920464. Its totient is φ = 42898544.

The previous prime is 87447229. The next prime is 87447257. The reversal of 87447244 is 44274478.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 87447197 and 87447206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206032 + ... + 206455.

It is an arithmetic number, because the mean of its divisors is an integer number (12993372).

Almost surely, 2^87447244 is an apocalyptic number.

It is an amenable number.

87447244 is a deficient number, since it is larger than the sum of its proper divisors (68473220).

87447244 is a wasteful number, since it uses less digits than its factorization.

87447244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412544 (or 412542 counting only the distinct ones).

The product of its digits is 200704, while the sum is 40.

The square root of 87447244 is about 9351.3231149394. The cubic root of 87447244 is about 443.8627595745.

The spelling of 87447244 in words is "eighty-seven million, four hundred forty-seven thousand, two hundred forty-four".