1408943988 has 36 divisors (see below), whose sum is σ = 3567722340. Its totient is φ = 468827136.

The previous prime is 1408943981. The next prime is 1408944011. The reversal of 1408943988 is 8893498041.

It can be written as a sum of positive squares in 2 ways, for example, as 1264655844 + 144288144 = 35562^2 + 12012^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1408943988² = 3970246322642688288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1408943981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13143 + ... + 54686.

Almost surely, 2^1408943988 is an apocalyptic number.

1408943988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1408943988 is an abundant number, since it is smaller than the sum of its proper divisors (2158778352).

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

1408943988 is a wasteful number, since it uses less digits than its factorization.

1408943988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68416 (or 68411 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 1408943988 is about 37535.9026533265. The cubic root of 1408943988 is about 1121.0661584547.

The spelling of 1408943988 in words is "one billion, four hundred eight million, nine hundred forty-three thousand, nine hundred eighty-eight".