870840098 has 4 divisors (see below), whose sum is σ = 1306260150. Its totient is φ = 435420048.

The previous prime is 870840083. The next prime is 870840121. The reversal of 870840098 is 890048078.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 446603689 + 424236409 = 21133^2 + 20597^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217710023 + ... + 217710026.

Almost surely, 2^870840098 is an apocalyptic number.

870840098 is a deficient number, since it is larger than the sum of its proper divisors (435420052).

870840098 is a wasteful number, since it uses less digits than its factorization.

870840098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435420051.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 870840098 is about 29509.9999661132. Note that the first 4 decimals coincide. The cubic root of 870840098 is about 954.9474484756.

The spelling of 870840098 in words is "eight hundred seventy million, eight hundred forty thousand, ninety-eight".