3520403994 has 8 divisors (see below), whose sum is σ = 7040808000. Its totient is φ = 1173467996.

The previous prime is 3520403977. The next prime is 3520404029. The reversal of 3520403994 is 4993040253.

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

3520403994 is an admirable number.

It is a Curzon number.

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, 293366994 + ... + 293367005.

It is an arithmetic number, because the mean of its divisors is an integer number (880101000).

Almost surely, 2^3520403994 is an apocalyptic number.

3520403994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3520403994 is a wasteful number, since it uses less digits than its factorization.

3520403994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586734004.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 3520403994 is about 59332.9924578223. The cubic root of 3520403994 is about 1521.2391779107.

The spelling of 3520403994 in words is "three billion, five hundred twenty million, four hundred three thousand, nine hundred ninety-four".