1339854440 has 16 divisors (see below), whose sum is σ = 3014672580. Its totient is φ = 535941760.

The previous prime is 1339854403. The next prime is 1339854493. The reversal of 1339854440 is 444589331.

It can be written as a sum of positive squares in 2 ways, for example, as 1267502404 + 72352036 = 35602^2 + 8506^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16748141 + ... + 16748220.

Almost surely, 2^1339854440 is an apocalyptic number.

1339854440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1339854440 is an abundant number, since it is smaller than the sum of its proper divisors (1674818140).

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

1339854440 is a wasteful number, since it uses less digits than its factorization.

1339854440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33496372 (or 33496368 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 1339854440 is about 36604.0221833612. The cubic root of 1339854440 is about 1102.4338505808.

The spelling of 1339854440 in words is "one billion, three hundred thirty-nine million, eight hundred fifty-four thousand, four hundred forty".