289212445156 has 12 divisors (see below), whose sum is σ = 511132886460. Its totient is φ = 143174477600.

The previous prime is 289212445121. The next prime is 289212445163. The reversal of 289212445156 is 651544212982.

It can be written as a sum of positive squares in 2 ways, for example, as 278688968100 + 10523477056 = 527910^2 + 102584^2 .

It is a super-2 number, since 2×289212445156² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357935791 + ... + 357936598.

It is an arithmetic number, because the mean of its divisors is an integer number (42594407205).

Almost surely, 2^289212445156 is an apocalyptic number.

It is an amenable number.

289212445156 is a deficient number, since it is larger than the sum of its proper divisors (221920441304).

289212445156 is a wasteful number, since it uses less digits than its factorization.

289212445156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715872494 (or 715872492 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 49.

The spelling of 289212445156 in words is "two hundred eighty-nine billion, two hundred twelve million, four hundred forty-five thousand, one hundred fifty-six".