10403893994 has 8 divisors (see below), whose sum is σ = 16806290340. Its totient is φ = 4801797216.

The previous prime is 10403893987. The next prime is 10403894003. The reversal of 10403893994 is 49939830401.

It can be written as a sum of positive squares in 2 ways, for example, as 10077549769 + 326344225 = 100387^2 + 18065^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200074859 + ... + 200074910.

Almost surely, 2^10403893994 is an apocalyptic number.

10403893994 is a deficient number, since it is larger than the sum of its proper divisors (6402396346).

10403893994 is a wasteful number, since it uses less digits than its factorization.

10403893994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400149784.

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 10403893994 in words is "ten billion, four hundred three million, eight hundred ninety-three thousand, nine hundred ninety-four".