289611946 has 64 divisors (see below), whose sum is σ = 513676800. Its totient is φ = 121305600.

The previous prime is 289611941. The next prime is 289611967. The reversal of 289611946 is 649116982.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 289611896 and 289611905.

It is not an unprimeable number, because it can be changed into a prime (289611941) 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, 1599976 + ... + 1600156.

It is an arithmetic number, because the mean of its divisors is an integer number (8026200).

Almost surely, 2^289611946 is an apocalyptic number.

289611946 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

289611946 is a deficient number, since it is larger than the sum of its proper divisors (224064854).

289611946 is a wasteful number, since it uses less digits than its factorization.

289611946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its digits is 186624, while the sum is 46.

The square root of 289611946 is about 17017.9888941085. The cubic root of 289611946 is about 661.6152250239.

The spelling of 289611946 in words is "two hundred eighty-nine million, six hundred eleven thousand, nine hundred forty-six".