1439430252 has 48 divisors (see below), whose sum is σ = 3774301440. Its totient is φ = 423643968.

The previous prime is 1439430221. The next prime is 1439430269. The reversal of 1439430252 is 2520349341.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197002 + ... + 204177.

It is an arithmetic number, because the mean of its divisors is an integer number (78631280).

Almost surely, 2^1439430252 is an apocalyptic number.

1439430252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1439430252 is an abundant number, since it is smaller than the sum of its proper divisors (2334871188).

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

1439430252 is a wasteful number, since it uses less digits than its factorization.

1439430252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401222 (or 401220 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1439430252 is about 37939.8240902617. The cubic root of 1439430252 is about 1129.0942835122.

Adding to 1439430252 its reverse (2520349341), we get a palindrome (3959779593).

The spelling of 1439430252 in words is "one billion, four hundred thirty-nine million, four hundred thirty thousand, two hundred fifty-two".