289855412 has 48 divisors (see below), whose sum is σ = 665710080. Its totient is φ = 106984800.

The previous prime is 289855411. The next prime is 289855429. The reversal of 289855412 is 214558982.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289855411) 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, 18914 + ... + 30617.

It is an arithmetic number, because the mean of its divisors is an integer number (13868960).

Almost surely, 2^289855412 is an apocalyptic number.

289855412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

289855412 is an abundant number, since it is smaller than the sum of its proper divisors (375854668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289855412 is a wasteful number, since it uses less digits than its factorization.

289855412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49572 (or 49570 counting only the distinct ones).

The product of its digits is 230400, while the sum is 44.

The square root of 289855412 is about 17025.1405867911. The cubic root of 289855412 is about 661.8005715395.

The spelling of 289855412 in words is "two hundred eighty-nine million, eight hundred fifty-five thousand, four hundred twelve".