993944408 has 8 divisors (see below), whose sum is σ = 1863645780. Its totient is φ = 496972200.

The previous prime is 993944387. The next prime is 993944437. The reversal of 993944408 is 804449399.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62121518 + ... + 62121533.

Almost surely, 2^993944408 is an apocalyptic number.

It is an amenable number.

993944408 is a deficient number, since it is larger than the sum of its proper divisors (869701372).

993944408 is a wasteful number, since it uses less digits than its factorization.

993944408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124243057 (or 124243053 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 993944408 is about 31526.8838929571. The cubic root of 993944408 is about 997.9773811043.

The spelling of 993944408 in words is "nine hundred ninety-three million, nine hundred forty-four thousand, four hundred eight".