870749946999 has 32 divisors (see below), whose sum is σ = 1342304317440. Its totient is φ = 557429067936.

The previous prime is 870749946991. The next prime is 870749947007. The reversal of 870749946999 is 999649947078.

It is a happy number.

870749946999 is a `hidden beast` number, since 87 + 0 + 7 + 499 + 46 + 9 + 9 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (870749946991) and next prime (870749947007).

It is not a de Polignac number, because 870749946999 - 2³ = 870749946991 is a prime.

It is a super-2 number, since 2×870749946999² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870749946991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6406047 + ... + 6540560.

It is an arithmetic number, because the mean of its divisors is an integer number (41947009920).

Almost surely, 2^870749946999 is an apocalyptic number.

870749946999 is a deficient number, since it is larger than the sum of its proper divisors (471554370441).

870749946999 is a wasteful number, since it uses less digits than its factorization.

870749946999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12946716 (or 12946710 counting only the distinct ones).

The product of its (nonzero) digits is 2222131968, while the sum is 81.

The spelling of 870749946999 in words is "eight hundred seventy billion, seven hundred forty-nine million, nine hundred forty-six thousand, nine hundred ninety-nine".