870949993 has 16 divisors (see below), whose sum is σ = 955126656. Its totient is φ = 791683200.

The previous prime is 870949979. The next prime is 870950021. The reversal of 870949993 is 399949078.

It is a cyclic number.

It is not a de Polignac number, because 870949993 - 2⁹ = 870949481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870949943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24693 + ... + 48493.

It is an arithmetic number, because the mean of its divisors is an integer number (59695416).

Almost surely, 2^870949993 is an apocalyptic number.

It is an amenable number.

870949993 is a deficient number, since it is larger than the sum of its proper divisors (84176663).

870949993 is a wasteful number, since it uses less digits than its factorization.

870949993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23904.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The square root of 870949993 is about 29511.8619033093. The cubic root of 870949993 is about 954.9876164069.

The spelling of 870949993 in words is "eight hundred seventy million, nine hundred forty-nine thousand, nine hundred ninety-three".