169230987 has 24 divisors (see below), whose sum is σ = 255999744. Its totient is φ = 107523504.

The previous prime is 169230959. The next prime is 169230989. The reversal of 169230987 is 789032961.

It is not a de Polignac number, because 169230987 - 2²³ = 160842379 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (169230989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62218 + ... + 64880.

It is an arithmetic number, because the mean of its divisors is an integer number (10666656).

Almost surely, 2^169230987 is an apocalyptic number.

169230987 is a deficient number, since it is larger than the sum of its proper divisors (86768757).

169230987 is a wasteful number, since it uses less digits than its factorization.

169230987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999 (or 2996 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 169230987 is about 13008.8810817841. The cubic root of 169230987 is about 553.1292552770.

The spelling of 169230987 in words is "one hundred sixty-nine million, two hundred thirty thousand, nine hundred eighty-seven".