3902478 has 8 divisors (see below), whose sum is σ = 7804968. Its totient is φ = 1300824.

The previous prime is 3902477. The next prime is 3902489. The reversal of 3902478 is 8742093.

3902478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

3902478 is an admirable number.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3902471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325201 + ... + 325212.

It is an arithmetic number, because the mean of its divisors is an integer number (975621).

Almost surely, 2^3902478 is an apocalyptic number.

3902478 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.

3902478 is a wasteful number, since it uses less digits than its factorization.

3902478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650418.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 3902478 is about 1975.4690582239. The cubic root of 3902478 is about 157.4394224079.

The spelling of 3902478 in words is "three million, nine hundred two thousand, four hundred seventy-eight".