1404997776 has 540 divisors, whose sum is σ = 5331385332. Its totient is φ = 342171648.

The previous prime is 1404997753. The next prime is 1404997787. The reversal of 1404997776 is 6777994041.

1404997776 is a `hidden beast` number, since 14 + 0 + 499 + 77 + 76 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 63680400 + 1341317376 = 7980^2 + 36624^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 26509366 + ... + 26509418.

Almost surely, 2^1404997776 is an apocalyptic number.

1404997776 is a gapful number since it is divisible by the number (16) 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 1404997776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2665692666).

1404997776 is an abundant number, since it is smaller than the sum of its proper divisors (3926387556).

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

1404997776 is a wasteful number, since it uses less digits than its factorization.

1404997776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The square root of 1404997776 is about 37483.2999614495. The cubic root of 1404997776 is about 1120.0185413597.

The spelling of 1404997776 in words is "one billion, four hundred four million, nine hundred ninety-seven thousand, seven hundred seventy-six".