1399636309220 has 48 divisors (see below), whose sum is σ = 2950710184128. Its totient is φ = 557670476160.

The previous prime is 1399636309219. The next prime is 1399636309223. The reversal of 1399636309220 is 229036369931.

It is a super-4 number, since 4×1399636309220⁴ (a number of 50 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1399636309223) 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, 15786815 + ... + 15875225.

It is an arithmetic number, because the mean of its divisors is an integer number (61473128836).

Almost surely, 2^{1399636309220} is an apocalyptic number.

1399636309220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1399636309220 is an abundant number, since it is smaller than the sum of its proper divisors (1551073874908).

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

1399636309220 is a wasteful number, since it uses less digits than its factorization.

1399636309220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91500 (or 91498 counting only the distinct ones).

The product of its (nonzero) digits is 2834352, while the sum is 53.

The spelling of 1399636309220 in words is "one trillion, three hundred ninety-nine billion, six hundred thirty-six million, three hundred nine thousand, two hundred twenty".