3904623 has 6 divisors (see below), whose sum is σ = 5640024. Its totient is φ = 2603076.

The previous prime is 3904603. The next prime is 3904631. The reversal of 3904623 is 3264093.

3904623 is a `hidden beast` number, since 39 + 0 + 4 + 623 = 666.

It is not a de Polignac number, because 3904623 - 2⁵ = 3904591 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3904603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 216915 + ... + 216932.

It is an arithmetic number, because the mean of its divisors is an integer number (940004).

Almost surely, 2^3904623 is an apocalyptic number.

3904623 is a deficient number, since it is larger than the sum of its proper divisors (1735401).

3904623 is a wasteful number, since it uses less digits than its factorization.

3904623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433853 (or 433850 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 3904623 is about 1976.0118926768. The cubic root of 3904623 is about 157.4682626906.

The spelling of 3904623 in words is "three million, nine hundred four thousand, six hundred twenty-three".