1401339739 has 16 divisors (see below), whose sum is σ = 1468383840. Its totient is φ = 1335985920.

The previous prime is 1401339727. The next prime is 1401339749. The reversal of 1401339739 is 9379331041.

It is a cyclic number.

It is not a de Polignac number, because 1401339739 - 2⁵ = 1401339707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401339749) by changing a digit.

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, 813399 + ... + 815119.

It is an arithmetic number, because the mean of its divisors is an integer number (91773990).

Almost surely, 2^1401339739 is an apocalyptic number.

1401339739 is a deficient number, since it is larger than the sum of its proper divisors (67044101).

1401339739 is a wasteful number, since it uses less digits than its factorization.

1401339739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 1401339739 is about 37434.4726021351. The cubic root of 1401339739 is about 1119.0456738382.

The spelling of 1401339739 in words is "one billion, four hundred one million, three hundred thirty-nine thousand, seven hundred thirty-nine".