1439609172 has 24 divisors (see below), whose sum is σ = 3449875296. Its totient is φ = 466900128.

The previous prime is 1439609167. The next prime is 1439609191. The reversal of 1439609172 is 2719069341.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1620738 + ... + 1621625.

It is an arithmetic number, because the mean of its divisors is an integer number (143744804).

Almost surely, 2^1439609172 is an apocalyptic number.

1439609172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1439609172 is an abundant number, since it is smaller than the sum of its proper divisors (2010266124).

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

1439609172 is a wasteful number, since it uses less digits than its factorization.

1439609172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242407 (or 3242405 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 1439609172 is about 37942.1819615056. The cubic root of 1439609172 is about 1129.1410634052.

The spelling of 1439609172 in words is "one billion, four hundred thirty-nine million, six hundred nine thousand, one hundred seventy-two".