1339990406 has 8 divisors (see below), whose sum is σ = 2012752560. Its totient is φ = 669072888.

The previous prime is 1339990367. The next prime is 1339990417. The reversal of 1339990406 is 6040999331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 459341 + ... + 462248.

It is an arithmetic number, because the mean of its divisors is an integer number (251594070).

Almost surely, 2^1339990406 is an apocalyptic number.

1339990406 is a deficient number, since it is larger than the sum of its proper divisors (672762154).

1339990406 is an equidigital number, since it uses as much as digits as its factorization.

1339990406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922318.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 1339990406 is about 36605.8793911579. The cubic root of 1339990406 is about 1102.4711403158.

The spelling of 1339990406 in words is "one billion, three hundred thirty-nine million, nine hundred ninety thousand, four hundred six".