87449470 has 16 divisors (see below), whose sum is σ = 160380000. Its totient is φ = 34319584.

The previous prime is 87449449. The next prime is 87449497. The reversal of 87449470 is 7494478.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81970 + ... + 83029.

It is an arithmetic number, because the mean of its divisors is an integer number (10023750).

Almost surely, 2^87449470 is an apocalyptic number.

87449470 is a deficient number, since it is larger than the sum of its proper divisors (72930530).

87449470 is a wasteful number, since it uses less digits than its factorization.

87449470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165059.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 87449470 is about 9351.4421347726. The cubic root of 87449470 is about 443.8665257695.

The spelling of 87449470 in words is "eighty-seven million, four hundred forty-nine thousand, four hundred seventy".