87843842 has 8 divisors (see below), whose sum is σ = 136309500. Its totient is φ = 42407344.

The previous prime is 87843839. The next prime is 87843851. The reversal of 87843842 is 24834878.

It can be written as a sum of positive squares in 2 ways, for example, as 79727041 + 8116801 = 8929^2 + 2849^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 87843793 and 87843802.

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, 757217 + ... + 757332.

Almost surely, 2^87843842 is an apocalyptic number.

87843842 is a deficient number, since it is larger than the sum of its proper divisors (48465658).

87843842 is a wasteful number, since it uses less digits than its factorization.

87843842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514580.

The product of its digits is 344064, while the sum is 44.

The square root of 87843842 is about 9372.5045745521. The cubic root of 87843842 is about 444.5327621201.

The spelling of 87843842 in words is "eighty-seven million, eight hundred forty-three thousand, eight hundred forty-two".