1397906790400 has 576 divisors, whose sum is σ = 3897495856800. Its totient is φ = 494130954240.

The previous prime is 1397906790389. The next prime is 1397906790433. The reversal of 1397906790400 is 40976097931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2265650892 + ... + 2265651508.

Almost surely, 2^{1397906790400} is an apocalyptic number.

1397906790400 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 1397906790400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1948747928400).

1397906790400 is an abundant number, since it is smaller than the sum of its proper divisors (2499589066400).

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

1397906790400 is a wasteful number, since it uses less digits than its factorization.

1397906790400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 55.

The spelling of 1397906790400 in words is "one trillion, three hundred ninety-seven billion, nine hundred six million, seven hundred ninety thousand, four hundred".