993920641 has 8 divisors (see below), whose sum is σ = 1154531264. Its totient is φ = 837965520.

The previous prime is 993920639. The next prime is 993920651. The reversal of 993920641 is 146029399.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 993920641 - 2¹ = 993920639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993920651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1163415 + ... + 1164268.

It is an arithmetic number, because the mean of its divisors is an integer number (144316408).

Almost surely, 2^993920641 is an apocalyptic number.

It is an amenable number.

993920641 is a deficient number, since it is larger than the sum of its proper divisors (160610623).

993920641 is a wasteful number, since it uses less digits than its factorization.

993920641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327751.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 993920641 is about 31526.5069584310. The cubic root of 993920641 is about 997.9694265624.

The spelling of 993920641 in words is "nine hundred ninety-three million, nine hundred twenty thousand, six hundred forty-one".