1390684869720 has 384 divisors, whose sum is σ = 4807015200000. Its totient is φ = 348016435200.

The previous prime is 1390684869701. The next prime is 1390684869727. The reversal of 1390684869720 is 279684860931.

1390684869720 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 68 + 486 + 97 + 2 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390684869727) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 695689281 + ... + 695691279.

It is an arithmetic number, because the mean of its divisors is an integer number (12518268750).

Almost surely, 2^{1390684869720} is an apocalyptic number.

1390684869720 is a gapful number since it is divisible by the number (10) 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 1390684869720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2403507600000).

1390684869720 is an abundant number, since it is smaller than the sum of its proper divisors (3416330330280).

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

1390684869720 is a wasteful number, since it uses less digits than its factorization.

1390684869720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883 (or 3876 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 1390684869720 in words is "one trillion, three hundred ninety billion, six hundred eighty-four million, eight hundred sixty-nine thousand, seven hundred twenty".