1397739808272 has 40 divisors (see below), whose sum is σ = 3727306159360. Its totient is φ = 450883808640.

The previous prime is 1397739808271. The next prime is 1397739808313. The reversal of 1397739808272 is 2728089377931.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1397739808271) 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 7 ways as a sum of consecutive naturals, for example, 469669147 + ... + 469672122.

It is an arithmetic number, because the mean of its divisors is an integer number (93182653984).

Almost surely, 2^{1397739808272} is an apocalyptic number.

1397739808272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1397739808272 is an abundant number, since it is smaller than the sum of its proper divisors (2329566351088).

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

1397739808272 is a wasteful number, since it uses less digits than its factorization.

1397739808272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939341311 (or 939341305 counting only the distinct ones).

The product of its (nonzero) digits is 64012032, while the sum is 66.

The spelling of 1397739808272 in words is "one trillion, three hundred ninety-seven billion, seven hundred thirty-nine million, eight hundred eight thousand, two hundred seventy-two".