870018949 has 8 divisors (see below), whose sum is σ = 924878880. Its totient is φ = 816066000.

The previous prime is 870018923. The next prime is 870018967. The reversal of 870018949 is 949810078.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 870018949 - 2⁹ = 870018437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 870018899 and 870018908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870018449) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 224767 + ... + 228604.

It is an arithmetic number, because the mean of its divisors is an integer number (115609860).

Almost surely, 2^870018949 is an apocalyptic number.

It is an amenable number.

870018949 is a deficient number, since it is larger than the sum of its proper divisors (54859931).

870018949 is a wasteful number, since it uses less digits than its factorization.

870018949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453491.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 870018949 is about 29496.0836213895. The cubic root of 870018949 is about 954.6472017204.

The spelling of 870018949 in words is "eight hundred seventy million, eighteen thousand, nine hundred forty-nine".