1408993916 has 12 divisors (see below), whose sum is σ = 2689897560. Its totient is φ = 640451760.

The previous prime is 1408993889. The next prime is 1408993919. The reversal of 1408993916 is 6193998041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1408993919) 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 3 ways as a sum of consecutive naturals, for example, 16011251 + ... + 16011338.

It is an arithmetic number, because the mean of its divisors is an integer number (224158130).

Almost surely, 2^1408993916 is an apocalyptic number.

It is an amenable number.

1408993916 is a deficient number, since it is larger than the sum of its proper divisors (1280903644).

1408993916 is a wasteful number, since it uses less digits than its factorization.

1408993916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32022604 (or 32022602 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 1408993916 is about 37536.5677173606. The cubic root of 1408993916 is about 1121.0794005070.

The spelling of 1408993916 in words is "one billion, four hundred eight million, nine hundred ninety-three thousand, nine hundred sixteen".