156989446 has 8 divisors (see below), whose sum is σ = 241848720. Its totient is φ = 76373208.

The previous prime is 156989429. The next prime is 156989489. The reversal of 156989446 is 644989651.

It is a happy number.

156989446 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 156989393 and 156989402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060666 + ... + 1060813.

It is an arithmetic number, because the mean of its divisors is an integer number (30231090).

Almost surely, 2^156989446 is an apocalyptic number.

156989446 is a deficient number, since it is larger than the sum of its proper divisors (84859274).

156989446 is a wasteful number, since it uses less digits than its factorization.

156989446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121518.

The product of its digits is 1866240, while the sum is 52.

The square root of 156989446 is about 12529.5429286148. The cubic root of 156989446 is about 539.4569827096.

The spelling of 156989446 in words is "one hundred fifty-six million, nine hundred eighty-nine thousand, four hundred forty-six".