156044989 has 8 divisors (see below), whose sum is σ = 165336768. Its totient is φ = 146765760.

The previous prime is 156044983. The next prime is 156045013. The reversal of 156044989 is 989440651.

It is a happy number.

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

It is not a de Polignac number, because 156044989 - 2³ = 156044981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156044981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37944 + ... + 41854.

It is an arithmetic number, because the mean of its divisors is an integer number (20667096).

Almost surely, 2^156044989 is an apocalyptic number.

It is an amenable number.

156044989 is a deficient number, since it is larger than the sum of its proper divisors (9291779).

156044989 is a wasteful number, since it uses less digits than its factorization.

156044989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6275.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 156044989 is about 12491.7968683452. The cubic root of 156044989 is about 538.3730052418.

The spelling of 156044989 in words is "one hundred fifty-six million, forty-four thousand, nine hundred eighty-nine".