1339401738 has 32 divisors (see below), whose sum is σ = 2701670400. Its totient is φ = 442672560.

The previous prime is 1339401709. The next prime is 1339401773. The reversal of 1339401738 is 8371049331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1339401696 and 1339401705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369531 + ... + 373137.

It is an arithmetic number, because the mean of its divisors is an integer number (84427200).

Almost surely, 2^1339401738 is an apocalyptic number.

1339401738 is an abundant number, since it is smaller than the sum of its proper divisors (1362268662).

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

1339401738 is a wasteful number, since it uses less digits than its factorization.

1339401738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4122.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1339401738 is about 36597.8378869572. The cubic root of 1339401738 is about 1102.3096753438.

The spelling of 1339401738 in words is "one billion, three hundred thirty-nine million, four hundred one thousand, seven hundred thirty-eight".