1400066856 has 192 divisors, whose sum is σ = 4149774720. Its totient is φ = 441365760.

The previous prime is 1400066839. The next prime is 1400066881. The reversal of 1400066856 is 6586600041.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1400066856.

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, 7735086 + ... + 7735266.

It is an arithmetic number, because the mean of its divisors is an integer number (21613410).

Almost surely, 2^1400066856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400066856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2074887360).

1400066856 is an abundant number, since it is smaller than the sum of its proper divisors (2749707864).

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

1400066856 is a wasteful number, since it uses less digits than its factorization.

1400066856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1400066856 is about 37417.4672579532. The cubic root of 1400066856 is about 1118.7067491951.

Adding to 1400066856 its reverse (6586600041), we get a palindrome (7986666897).

The spelling of 1400066856 in words is "one billion, four hundred million, sixty-six thousand, eight hundred fifty-six".