169461089 has 4 divisors (see below), whose sum is σ = 193669824. Its totient is φ = 145252356.

The previous prime is 169461067. The next prime is 169461091. The reversal of 169461089 is 980164961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 980164961 = 4547 ⋅215563.

It is a cyclic number.

It is not a de Polignac number, because 169461089 - 2¹⁶ = 169395553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169461289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12104357 + ... + 12104370.

It is an arithmetic number, because the mean of its divisors is an integer number (48417456).

Almost surely, 2^169461089 is an apocalyptic number.

It is an amenable number.

169461089 is a deficient number, since it is larger than the sum of its proper divisors (24208735).

169461089 is an equidigital number, since it uses as much as digits as its factorization.

169461089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24208734.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 169461089 is about 13017.7221125664. The cubic root of 169461089 is about 553.3798368603.

The spelling of 169461089 in words is "one hundred sixty-nine million, four hundred sixty-one thousand, eighty-nine".