3904387121 has 8 divisors (see below), whose sum is σ = 4110465600. Its totient is φ = 3698367120.

The previous prime is 3904387111. The next prime is 3904387129. The reversal of 3904387121 is 1217834093.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3904387121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3904387129) 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, 215276 + ... + 232706.

It is an arithmetic number, because the mean of its divisors is an integer number (513808200).

Almost surely, 2^3904387121 is an apocalyptic number.

It is an amenable number.

3904387121 is a deficient number, since it is larger than the sum of its proper divisors (206078479).

3904387121 is a wasteful number, since it uses less digits than its factorization.

3904387121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29239.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 3904387121 is about 62485.0951907733. The cubic root of 3904387121 is about 1574.6509173105.

The spelling of 3904387121 in words is "three billion, nine hundred four million, three hundred eighty-seven thousand, one hundred twenty-one".