169439004 has 36 divisors (see below), whose sum is σ = 489491184. Its totient is φ = 48411072.

The previous prime is 169439003. The next prime is 169439009. The reversal of 169439004 is 400934961.

169439004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 169439004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169439003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335937 + ... + 336440.

Almost surely, 2^169439004 is an apocalyptic number.

169439004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

169439004 is an abundant number, since it is smaller than the sum of its proper divisors (320052180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169439004 is a wasteful number, since it uses less digits than its factorization.

169439004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672394 (or 672389 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 169439004 is about 13016.8738182407. The cubic root of 169439004 is about 553.3557960914.

The spelling of 169439004 in words is "one hundred sixty-nine million, four hundred thirty-nine thousand, four".