3902845 has 8 divisors (see below), whose sum is σ = 4695264. Its totient is φ = 3114384.

The previous prime is 3902839. The next prime is 3902851. The reversal of 3902845 is 5482093.

It is an interprime number because it is at equal distance from previous prime (3902839) and next prime (3902851).

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

It is a cyclic number.

It is not a de Polignac number, because 3902845 - 2⁵ = 3902813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2022 + ... + 3448.

It is an arithmetic number, because the mean of its divisors is an integer number (586908).

Almost surely, 2^3902845 is an apocalyptic number.

It is an amenable number.

3902845 is a deficient number, since it is larger than the sum of its proper divisors (792419).

3902845 is a wasteful number, since it uses less digits than its factorization.

3902845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 3902845 is about 1975.5619453715. The cubic root of 3902845 is about 157.4443576018. Note that the first 3 decimals are identical.

The spelling of 3902845 in words is "three million, nine hundred two thousand, eight hundred forty-five".