285470770989 has 8 divisors (see below), whose sum is σ = 380630204640. Its totient is φ = 190312592336.

The previous prime is 285470770969. The next prime is 285470770997. The reversal of 285470770989 is 989077074582.

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 285470770989 - 2⁹ = 285470770477 is a prime.

It is a super-2 number, since 2×285470770989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285470770969) 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, 583894 + ... + 954920.

It is an arithmetic number, because the mean of its divisors is an integer number (47578775580).

Almost surely, 2^285470770989 is an apocalyptic number.

It is an amenable number.

285470770989 is a deficient number, since it is larger than the sum of its proper divisors (95159433651).

285470770989 is a wasteful number, since it uses less digits than its factorization.

285470770989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627499.

The product of its (nonzero) digits is 71124480, while the sum is 66.

The spelling of 285470770989 in words is "two hundred eighty-five billion, four hundred seventy million, seven hundred seventy thousand, nine hundred eighty-nine".