1399169970744 has 512 divisors, whose sum is σ = 4616150784000. Its totient is φ = 343125393408.

The previous prime is 1399169970743. The next prime is 1399169970749. The reversal of 1399169970744 is 4470799619931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399169970743) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 693687624 + ... + 693689640.

It is an arithmetic number, because the mean of its divisors is an integer number (9015919500).

Almost surely, 2^{1399169970744} is an apocalyptic number.

1399169970744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1399169970744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2308075392000).

1399169970744 is an abundant number, since it is smaller than the sum of its proper divisors (3216980813256).

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

1399169970744 is a wasteful number, since it uses less digits than its factorization.

1399169970744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367 (or 2363 counting only the distinct ones).

The product of its (nonzero) digits is 92588832, while the sum is 69.

The spelling of 1399169970744 in words is "one trillion, three hundred ninety-nine billion, one hundred sixty-nine million, nine hundred seventy thousand, seven hundred forty-four".