3955890 has 32 divisors (see below), whose sum is σ = 9823680. Its totient is φ = 1018304.

The previous prime is 3955877. The next prime is 3955909. The reversal of 3955890 is 985593.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1404 + ... + 3143.

It is an arithmetic number, because the mean of its divisors is an integer number (306990).

Almost surely, 2^3955890 is an apocalyptic number.

3955890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3955890 is an abundant number, since it is smaller than the sum of its proper divisors (5867790).

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

3955890 is a wasteful number, since it uses less digits than its factorization.

3955890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 3955890 is about 1988.9419297707. The cubic root of 3955890 is about 158.1544449325.

The spelling of 3955890 in words is "three million, nine hundred fifty-five thousand, eight hundred ninety".