1329872739 has 32 divisors (see below), whose sum is σ = 1966804224. Its totient is φ = 794102400.

The previous prime is 1329872737. The next prime is 1329872741. The reversal of 1329872739 is 9372789231.

It is an interprime number because it is at equal distance from previous prime (1329872737) and next prime (1329872741).

It is not a de Polignac number, because 1329872739 - 2¹ = 1329872737 is a prime.

It is a super-3 number, since 3×1329872739³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1329872691 and 1329872700.

It is not an unprimeable number, because it can be changed into a prime (1329872737) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 260764 + ... + 265814.

It is an arithmetic number, because the mean of its divisors is an integer number (61462632).

Almost surely, 2^1329872739 is an apocalyptic number.

1329872739 is a deficient number, since it is larger than the sum of its proper divisors (636931485).

1329872739 is a wasteful number, since it uses less digits than its factorization.

1329872739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5267.

The product of its digits is 1143072, while the sum is 51.

The square root of 1329872739 is about 36467.4202405380. The cubic root of 1329872739 is about 1099.6893720700.

The spelling of 1329872739 in words is "one billion, three hundred twenty-nine million, eight hundred seventy-two thousand, seven hundred thirty-nine".