994405693 has 4 divisors (see below), whose sum is σ = 1026483328. Its totient is φ = 962328060.

The previous prime is 994405661. The next prime is 994405723. The reversal of 994405693 is 396504499.

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 994405693 - 2⁵ = 994405661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994405393) 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, 16038771 + ... + 16038832.

It is an arithmetic number, because the mean of its divisors is an integer number (256620832).

Almost surely, 2^994405693 is an apocalyptic number.

It is an amenable number.

994405693 is a deficient number, since it is larger than the sum of its proper divisors (32077635).

994405693 is a wasteful number, since it uses less digits than its factorization.

994405693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32077634.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 994405693 is about 31534.1987848114. The cubic root of 994405693 is about 998.1317427886.

The spelling of 994405693 in words is "nine hundred ninety-four million, four hundred five thousand, six hundred ninety-three".