993955444669 has 4 divisors (see below), whose sum is σ = 1084315030560. Its totient is φ = 903595858780.

The previous prime is 993955444663. The next prime is 993955444673. The reversal of 993955444669 is 966444559399.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 993955444669 - 2⁷ = 993955444541 is a prime.

It is a super-2 number, since 2×993955444669² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993955444663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45179792929 + ... + 45179792950.

It is an arithmetic number, because the mean of its divisors is an integer number (271078757640).

Almost surely, 2^993955444669 is an apocalyptic number.

It is an amenable number.

993955444669 is a deficient number, since it is larger than the sum of its proper divisors (90359585891).

993955444669 is a wasteful number, since it uses less digits than its factorization.

993955444669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90359585890.

The product of its digits is 1133740800, while the sum is 73.

The spelling of 993955444669 in words is "nine hundred ninety-three billion, nine hundred fifty-five million, four hundred forty-four thousand, six hundred sixty-nine".