87449970 has 32 divisors (see below), whose sum is σ = 220927680. Its totient is φ = 22092480.

The previous prime is 87449963. The next prime is 87450001. The reversal of 87449970 is 7994478.

It is a happy number.

It is a super-3 number, since 3×87449970³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76141 + ... + 77280.

It is an arithmetic number, because the mean of its divisors is an integer number (6903990).

Almost surely, 2^87449970 is an apocalyptic number.

87449970 is an abundant number, since it is smaller than the sum of its proper divisors (133477710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87449970 is a wasteful number, since it uses less digits than its factorization.

87449970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153450.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 87449970 is about 9351.4688685789. The cubic root of 87449970 is about 443.8673717165.

The spelling of 87449970 in words is "eighty-seven million, four hundred forty-nine thousand, nine hundred seventy".