1400894784 has 168 divisors, whose sum is σ = 4219326080. Its totient is φ = 455784192.

The previous prime is 1400894783. The next prime is 1400894797. The reversal of 1400894784 is 4874980041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400894783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3816969 + ... + 3817335.

Almost surely, 2^1400894784 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 1400894784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2109663040).

1400894784 is an abundant number, since it is smaller than the sum of its proper divisors (2818431296).

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

1400894784 is an equidigital number, since it uses as much as digits as its factorization.

1400894784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 1400894784 is about 37428.5290119716. The cubic root of 1400894784 is about 1118.9272210786.

The spelling of 1400894784 in words is "one billion, four hundred million, eight hundred ninety-four thousand, seven hundred eighty-four".