155349489 has 8 divisors (see below), whose sum is σ = 207299232. Its totient is φ = 103483040.

The previous prime is 155349487. The next prime is 155349499. The reversal of 155349489 is 984943551.

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

It is a cyclic number.

It is not a de Polignac number, because 155349489 - 2¹ = 155349487 is a prime.

It is a super-2 number, since 2×155349489² = 48266927465122242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155349487) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16332 + ... + 24029.

It is an arithmetic number, because the mean of its divisors is an integer number (25912404).

Almost surely, 2^155349489 is an apocalyptic number.

It is an amenable number.

155349489 is a deficient number, since it is larger than the sum of its proper divisors (51949743).

155349489 is a wasteful number, since it uses less digits than its factorization.

155349489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41647.

The product of its digits is 777600, while the sum is 48.

The square root of 155349489 is about 12463.9275110216. The cubic root of 155349489 is about 537.5719625301.

The spelling of 155349489 in words is "one hundred fifty-five million, three hundred forty-nine thousand, four hundred eighty-nine".